21415472

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{691}}^1$

素因数の和:861

約数の個数: 40

約数和(自身を含む): 45049200

約数和(自身を除く): 23633728

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 149, 208, 298, 596, 691, 1192, 1382, 1937, 2384, 2764, 3874, 5528, 7748, 8983, 11056, 15496, 17966, 30992, 35932, 71864, 102959, 143728, 205918, 411836, 823672, 1338467, 1647344, 2676934, 5353868, 10707736, 21415472]

約数ペア:

[(1, 21415472), (2, 10707736), (4, 5353868), (8, 2676934), (13, 1647344), (16, 1338467), (26, 823672), (52, 411836), (104, 205918), (149, 143728), (208, 102959), (298, 71864), (596, 35932), (691, 30992), (1192, 17966), (1382, 15496), (1937, 11056), (2384, 8983), (2764, 7748), (3874, 5528)]