21139936220

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{1579}}^1$

素因数の和:1864

約数の個数: 144

約数和(自身を含む): 51150022560

約数和(自身を除く): 30010086340

約数列:

[1, 2, 4, 5, 10, 13, 17, 20, 26, 34, 52, 65, 68, 85, 130, 169, 170, 221, 233, 260, 338, 340, 442, 466, 676, 845, 884, 932, 1105, 1165, 1579, 1690, 2210, 2330, 2873, 3029, 3158, 3380, 3961, 4420, 4660, 5746, 6058, 6316, 7895, 7922, 11492, 12116, 14365, 15145, 15790, 15844, 19805, 20527, 26843, 28730, 30290, 31580, 39377, 39610, 41054, 51493, 53686, 57460, 60580, 78754, 79220, 82108, 102635, 102986, 107372, 134215, 157508, 196885, 205270, 205972, 257465, 266851, 268430, 348959, 367907, 393770, 410540, 514930, 533702, 536860, 669409, 697918, 735814, 787540, 1029860, 1067404, 1334255, 1338818, 1395836, 1471628, 1744795, 1839535, 2668510, 2677636, 3347045, 3489590, 3679070, 4536467, 4782791, 5337020, 6254419, 6694090, 6979180, 7358140, 9072934, 9565582, 12508838, 13388180, 18145868, 19131164, 22682335, 23913955, 25017676, 31272095, 45364670, 47827910, 62176283, 62544190, 81307447, 90729340, 95655820, 124352566, 125088380, 162614894, 248705132, 310881415, 325229788, 406537235, 621762830, 813074470, 1056996811, 1243525660, 1626148940, 2113993622, 4227987244, 5284984055, 10569968110, 21139936220]

約数ペア:

[(1, 21139936220), (2, 10569968110), (4, 5284984055), (5, 4227987244), (10, 2113993622), (13, 1626148940), (17, 1243525660), (20, 1056996811), (26, 813074470), (34, 621762830), (52, 406537235), (65, 325229788), (68, 310881415), (85, 248705132), (130, 162614894), (169, 125088380), (170, 124352566), (221, 95655820), (233, 90729340), (260, 81307447), (338, 62544190), (340, 62176283), (442, 47827910), (466, 45364670), (676, 31272095), (845, 25017676), (884, 23913955), (932, 22682335), (1105, 19131164), (1165, 18145868), (1579, 13388180), (1690, 12508838), (2210, 9565582), (2330, 9072934), (2873, 7358140), (3029, 6979180), (3158, 6694090), (3380, 6254419), (3961, 5337020), (4420, 4782791), (4660, 4536467), (5746, 3679070), (6058, 3489590), (6316, 3347045), (7895, 2677636), (7922, 2668510), (11492, 1839535), (12116, 1744795), (14365, 1471628), (15145, 1395836), (15790, 1338818), (15844, 1334255), (19805, 1067404), (20527, 1029860), (26843, 787540), (28730, 735814), (30290, 697918), (31580, 669409), (39377, 536860), (39610, 533702), (41054, 514930), (51493, 410540), (53686, 393770), (57460, 367907), (60580, 348959), (78754, 268430), (79220, 266851), (82108, 257465), (102635, 205972), (102986, 205270), (107372, 196885), (134215, 157508)]