21612292

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{239}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 21288188

約数列:

[1, 2, 4, 13, 26, 37, 47, 52, 74, 94, 148, 188, 239, 478, 481, 611, 956, 962, 1222, 1739, 1924, 2444, 3107, 3478, 6214, 6956, 8843, 11233, 12428, 17686, 22466, 22607, 35372, 44932, 45214, 90428, 114959, 146029, 229918, 292058, 415621, 459836, 584116, 831242, 1662484, 5403073, 10806146, 21612292]

約数ペア:

[(1, 21612292), (2, 10806146), (4, 5403073), (13, 1662484), (26, 831242), (37, 584116), (47, 459836), (52, 415621), (74, 292058), (94, 229918), (148, 146029), (188, 114959), (239, 90428), (478, 45214), (481, 44932), (611, 35372), (956, 22607), (962, 22466), (1222, 17686), (1739, 12428), (1924, 11233), (2444, 8843), (3107, 6956), (3478, 6214)]