21697260

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27817}}^1$

素因数の和:27842

約数の個数: 48

約数和(自身を含む): 65427936

約数和(自身を除く): 43730676

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27817, 55634, 83451, 111268, 139085, 166902, 278170, 333804, 361621, 417255, 556340, 723242, 834510, 1084863, 1446484, 1669020, 1808105, 2169726, 3616210, 4339452, 5424315, 7232420, 10848630, 21697260]

約数ペア:

[(1, 21697260), (2, 10848630), (3, 7232420), (4, 5424315), (5, 4339452), (6, 3616210), (10, 2169726), (12, 1808105), (13, 1669020), (15, 1446484), (20, 1084863), (26, 834510), (30, 723242), (39, 556340), (52, 417255), (60, 361621), (65, 333804), (78, 278170), (130, 166902), (156, 139085), (195, 111268), (260, 83451), (390, 55634), (780, 27817)]