290465320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{177113}}^1$

素因数の和:177165

約数の個数: 32

約数和(自身を含む): 669490920

約数和(自身を除く): 379025600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 177113, 354226, 708452, 885565, 1416904, 1771130, 3542260, 7084520, 7261633, 14523266, 29046532, 36308165, 58093064, 72616330, 145232660, 290465320]

約数ペア:

[(1, 290465320), (2, 145232660), (4, 72616330), (5, 58093064), (8, 36308165), (10, 29046532), (20, 14523266), (40, 7261633), (41, 7084520), (82, 3542260), (164, 1771130), (205, 1416904), (328, 885565), (410, 708452), (820, 354226), (1640, 177113)]