21899020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1$

素因数の和:96

約数の個数: 144

約数和(自身を含む): 59028480

約数和(自身を除く): 37129460

約数列:

[1, 2, 4, 5, 10, 11, 13, 19, 20, 22, 26, 31, 38, 44, 52, 55, 62, 65, 76, 95, 110, 124, 130, 143, 155, 169, 190, 209, 220, 247, 260, 286, 310, 338, 341, 380, 403, 418, 494, 572, 589, 620, 676, 682, 715, 806, 836, 845, 988, 1045, 1178, 1235, 1364, 1430, 1612, 1690, 1705, 1859, 2015, 2090, 2356, 2470, 2717, 2860, 2945, 3211, 3380, 3410, 3718, 4030, 4180, 4433, 4940, 5239, 5434, 5890, 6422, 6479, 6820, 7436, 7657, 8060, 8866, 9295, 10478, 10868, 11780, 12844, 12958, 13585, 15314, 16055, 17732, 18590, 20956, 22165, 25916, 26195, 27170, 30628, 32110, 32395, 35321, 37180, 38285, 44330, 52390, 54340, 57629, 64220, 64790, 70642, 76570, 84227, 88660, 99541, 104780, 115258, 129580, 141284, 153140, 168454, 176605, 199082, 230516, 288145, 336908, 353210, 398164, 421135, 497705, 576290, 706420, 842270, 995410, 1094951, 1152580, 1684540, 1990820, 2189902, 4379804, 5474755, 10949510, 21899020]

約数ペア:

[(1, 21899020), (2, 10949510), (4, 5474755), (5, 4379804), (10, 2189902), (11, 1990820), (13, 1684540), (19, 1152580), (20, 1094951), (22, 995410), (26, 842270), (31, 706420), (38, 576290), (44, 497705), (52, 421135), (55, 398164), (62, 353210), (65, 336908), (76, 288145), (95, 230516), (110, 199082), (124, 176605), (130, 168454), (143, 153140), (155, 141284), (169, 129580), (190, 115258), (209, 104780), (220, 99541), (247, 88660), (260, 84227), (286, 76570), (310, 70642), (338, 64790), (341, 64220), (380, 57629), (403, 54340), (418, 52390), (494, 44330), (572, 38285), (589, 37180), (620, 35321), (676, 32395), (682, 32110), (715, 30628), (806, 27170), (836, 26195), (845, 25916), (988, 22165), (1045, 20956), (1178, 18590), (1235, 17732), (1364, 16055), (1430, 15314), (1612, 13585), (1690, 12958), (1705, 12844), (1859, 11780), (2015, 10868), (2090, 10478), (2356, 9295), (2470, 8866), (2717, 8060), (2860, 7657), (2945, 7436), (3211, 6820), (3380, 6479), (3410, 6422), (3718, 5890), (4030, 5434), (4180, 5239), (4433, 4940)]