21557789140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1\times {\mathrm{2441}}^1$

素因数の和:2809

約数の個数: 96

約数和(自身を含む): 48088567296

約数和(自身を除く): 26530778156

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 73, 92, 115, 146, 230, 263, 292, 365, 460, 526, 730, 1052, 1315, 1460, 1679, 2441, 2630, 3358, 4882, 5260, 6049, 6716, 8395, 9764, 12098, 12205, 16790, 19199, 24196, 24410, 30245, 33580, 38398, 48820, 56143, 60490, 76796, 95995, 112286, 120980, 178193, 191990, 224572, 280715, 356386, 383980, 441577, 561430, 641983, 712772, 883154, 890965, 1122860, 1283966, 1766308, 1781930, 2207885, 2567932, 3209915, 3563860, 4098439, 4415770, 6419830, 8196878, 8831540, 12839660, 14765609, 16393756, 20492195, 29531218, 40984390, 46864759, 59062436, 73828045, 81968780, 93729518, 147656090, 187459036, 234323795, 295312180, 468647590, 937295180, 1077889457, 2155778914, 4311557828, 5389447285, 10778894570, 21557789140]

約数ペア:

[(1, 21557789140), (2, 10778894570), (4, 5389447285), (5, 4311557828), (10, 2155778914), (20, 1077889457), (23, 937295180), (46, 468647590), (73, 295312180), (92, 234323795), (115, 187459036), (146, 147656090), (230, 93729518), (263, 81968780), (292, 73828045), (365, 59062436), (460, 46864759), (526, 40984390), (730, 29531218), (1052, 20492195), (1315, 16393756), (1460, 14765609), (1679, 12839660), (2441, 8831540), (2630, 8196878), (3358, 6419830), (4882, 4415770), (5260, 4098439), (6049, 3563860), (6716, 3209915), (8395, 2567932), (9764, 2207885), (12098, 1781930), (12205, 1766308), (16790, 1283966), (19199, 1122860), (24196, 890965), (24410, 883154), (30245, 712772), (33580, 641983), (38398, 561430), (48820, 441577), (56143, 383980), (60490, 356386), (76796, 280715), (95995, 224572), (112286, 191990), (120980, 178193)]