8719880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{409}}^1$

素因数の和:474

約数の個数: 64

約数和(自身を含む): 21697200

約数和(自身を除く): 12977320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 409, 410, 520, 533, 818, 820, 1066, 1636, 1640, 2045, 2132, 2665, 3272, 4090, 4264, 5317, 5330, 8180, 10634, 10660, 16360, 16769, 21268, 21320, 26585, 33538, 42536, 53170, 67076, 83845, 106340, 134152, 167690, 212680, 217997, 335380, 435994, 670760, 871988, 1089985, 1743976, 2179970, 4359940, 8719880]

約数ペア:

[(1, 8719880), (2, 4359940), (4, 2179970), (5, 1743976), (8, 1089985), (10, 871988), (13, 670760), (20, 435994), (26, 335380), (40, 217997), (41, 212680), (52, 167690), (65, 134152), (82, 106340), (104, 83845), (130, 67076), (164, 53170), (205, 42536), (260, 33538), (328, 26585), (409, 21320), (410, 21268), (520, 16769), (533, 16360), (818, 10660), (820, 10634), (1066, 8180), (1636, 5330), (1640, 5317), (2045, 4264), (2132, 4090), (2665, 3272)]