399090290

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{541}}^1\times {\mathrm{1039}}^1$

素因数の和:1658

約数の個数: 32

約数和(自身を含む): 730529280

約数和(自身を除く): 331438990

約数列:

[1, 2, 5, 10, 71, 142, 355, 541, 710, 1039, 1082, 2078, 2705, 5195, 5410, 10390, 38411, 73769, 76822, 147538, 192055, 368845, 384110, 562099, 737690, 1124198, 2810495, 5620990, 39909029, 79818058, 199545145, 399090290]

約数ペア:

[(1, 399090290), (2, 199545145), (5, 79818058), (10, 39909029), (71, 5620990), (142, 2810495), (355, 1124198), (541, 737690), (710, 562099), (1039, 384110), (1082, 368845), (2078, 192055), (2705, 147538), (5195, 76822), (5410, 73769), (10390, 38411)]