290985860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{21683}}^1$

素因数の和:21764

約数の個数: 48

約数和(自身を含む): 677581632

約数和(自身を除く): 386595772

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 61, 110, 122, 220, 244, 305, 610, 671, 1220, 1342, 2684, 3355, 6710, 13420, 21683, 43366, 86732, 108415, 216830, 238513, 433660, 477026, 954052, 1192565, 1322663, 2385130, 2645326, 4770260, 5290652, 6613315, 13226630, 14549293, 26453260, 29098586, 58197172, 72746465, 145492930, 290985860]

約数ペア:

[(1, 290985860), (2, 145492930), (4, 72746465), (5, 58197172), (10, 29098586), (11, 26453260), (20, 14549293), (22, 13226630), (44, 6613315), (55, 5290652), (61, 4770260), (110, 2645326), (122, 2385130), (220, 1322663), (244, 1192565), (305, 954052), (610, 477026), (671, 433660), (1220, 238513), (1342, 216830), (2684, 108415), (3355, 86732), (6710, 43366), (13420, 21683)]