20778998500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{311}}^1\times {\mathrm{541}}^1$

素因数の和:903

約数の個数: 192

約数和(自身を含む): 51705239040

約数和(自身を除く): 30926240540

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 125, 130, 190, 247, 250, 260, 311, 325, 380, 475, 494, 500, 541, 622, 650, 950, 988, 1082, 1235, 1244, 1300, 1555, 1625, 1900, 2164, 2375, 2470, 2705, 3110, 3250, 4043, 4750, 4940, 5410, 5909, 6175, 6220, 6500, 7033, 7775, 8086, 9500, 10279, 10820, 11818, 12350, 13525, 14066, 15550, 16172, 20215, 20558, 23636, 24700, 27050, 28132, 29545, 30875, 31100, 35165, 38875, 40430, 41116, 51395, 54100, 59090, 61750, 67625, 70330, 76817, 77750, 80860, 101075, 102790, 118180, 123500, 133627, 135250, 140660, 147725, 153634, 155500, 168251, 175825, 202150, 205580, 256975, 267254, 270500, 295450, 307268, 336502, 351650, 384085, 404300, 505375, 513950, 534508, 590900, 668135, 673004, 703300, 738625, 768170, 841255, 879125, 1010750, 1027900, 1284875, 1336270, 1477250, 1536340, 1682510, 1758250, 1920425, 2021500, 2187263, 2569750, 2672540, 2954500, 3196769, 3340675, 3365020, 3516500, 3840850, 4206275, 4374526, 5139500, 6393538, 6681350, 7681700, 8412550, 8749052, 9602125, 10936315, 12787076, 13362700, 15983845, 16703375, 16825100, 19204250, 21031375, 21872630, 31967690, 33406750, 38408500, 41557997, 42062750, 43745260, 54681575, 63935380, 66813500, 79919225, 83115994, 84125500, 109363150, 159838450, 166231988, 207789985, 218726300, 273407875, 319676900, 399596125, 415579970, 546815750, 799192250, 831159940, 1038949925, 1093631500, 1598384500, 2077899850, 4155799700, 5194749625, 10389499250, 20778998500]

約数ペア:

[(1, 20778998500), (2, 10389499250), (4, 5194749625), (5, 4155799700), (10, 2077899850), (13, 1598384500), (19, 1093631500), (20, 1038949925), (25, 831159940), (26, 799192250), (38, 546815750), (50, 415579970), (52, 399596125), (65, 319676900), (76, 273407875), (95, 218726300), (100, 207789985), (125, 166231988), (130, 159838450), (190, 109363150), (247, 84125500), (250, 83115994), (260, 79919225), (311, 66813500), (325, 63935380), (380, 54681575), (475, 43745260), (494, 42062750), (500, 41557997), (541, 38408500), (622, 33406750), (650, 31967690), (950, 21872630), (988, 21031375), (1082, 19204250), (1235, 16825100), (1244, 16703375), (1300, 15983845), (1555, 13362700), (1625, 12787076), (1900, 10936315), (2164, 9602125), (2375, 8749052), (2470, 8412550), (2705, 7681700), (3110, 6681350), (3250, 6393538), (4043, 5139500), (4750, 4374526), (4940, 4206275), (5410, 3840850), (5909, 3516500), (6175, 3365020), (6220, 3340675), (6500, 3196769), (7033, 2954500), (7775, 2672540), (8086, 2569750), (9500, 2187263), (10279, 2021500), (10820, 1920425), (11818, 1758250), (12350, 1682510), (13525, 1536340), (14066, 1477250), (15550, 1336270), (16172, 1284875), (20215, 1027900), (20558, 1010750), (23636, 879125), (24700, 841255), (27050, 768170), (28132, 738625), (29545, 703300), (30875, 673004), (31100, 668135), (35165, 590900), (38875, 534508), (40430, 513950), (41116, 505375), (51395, 404300), (54100, 384085), (59090, 351650), (61750, 336502), (67625, 307268), (70330, 295450), (76817, 270500), (77750, 267254), (80860, 256975), (101075, 205580), (102790, 202150), (118180, 175825), (123500, 168251), (133627, 155500), (135250, 153634), (140660, 147725)]