399081320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{47737}}^1$

素因数の和:47778

約数の個数: 64

約数和(自身を含む): 1031140800

約数和(自身を除く): 632059480

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 4180, 8360, 47737, 95474, 190948, 238685, 381896, 477370, 525107, 907003, 954740, 1050214, 1814006, 1909480, 2100428, 2625535, 3628012, 4200856, 4535015, 5251070, 7256024, 9070030, 9977033, 10502140, 18140060, 19954066, 21004280, 36280120, 39908132, 49885165, 79816264, 99770330, 199540660, 399081320]

約数ペア:

[(1, 399081320), (2, 199540660), (4, 99770330), (5, 79816264), (8, 49885165), (10, 39908132), (11, 36280120), (19, 21004280), (20, 19954066), (22, 18140060), (38, 10502140), (40, 9977033), (44, 9070030), (55, 7256024), (76, 5251070), (88, 4535015), (95, 4200856), (110, 3628012), (152, 2625535), (190, 2100428), (209, 1909480), (220, 1814006), (380, 1050214), (418, 954740), (440, 907003), (760, 525107), (836, 477370), (1045, 381896), (1672, 238685), (2090, 190948), (4180, 95474), (8360, 47737)]