208605990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{347}}^1\times {\mathrm{691}}^1$

素因数の和:1077

約数の個数: 64

約数和(自身を含む): 520162560

約数和(自身を除く): 311556570

約数列:

[1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 347, 435, 691, 694, 870, 1041, 1382, 1735, 2073, 2082, 3455, 3470, 4146, 5205, 6910, 10063, 10365, 10410, 20039, 20126, 20730, 30189, 40078, 50315, 60117, 60378, 100195, 100630, 120234, 150945, 200390, 239777, 300585, 301890, 479554, 601170, 719331, 1198885, 1438662, 2397770, 3596655, 6953533, 7193310, 13907066, 20860599, 34767665, 41721198, 69535330, 104302995, 208605990]

約数ペア:

[(1, 208605990), (2, 104302995), (3, 69535330), (5, 41721198), (6, 34767665), (10, 20860599), (15, 13907066), (29, 7193310), (30, 6953533), (58, 3596655), (87, 2397770), (145, 1438662), (174, 1198885), (290, 719331), (347, 601170), (435, 479554), (691, 301890), (694, 300585), (870, 239777), (1041, 200390), (1382, 150945), (1735, 120234), (2073, 100630), (2082, 100195), (3455, 60378), (3470, 60117), (4146, 50315), (5205, 40078), (6910, 30189), (10063, 20730), (10365, 20126), (10410, 20039)]