16778840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{787}}^1$

素因数の和:852

約数の個数: 64

約数和(自身を含む): 41700960

約数和(自身を除く): 24922120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 787, 820, 1066, 1574, 1640, 2132, 2665, 3148, 3935, 4264, 5330, 6296, 7870, 10231, 10660, 15740, 20462, 21320, 31480, 32267, 40924, 51155, 64534, 81848, 102310, 129068, 161335, 204620, 258136, 322670, 409240, 419471, 645340, 838942, 1290680, 1677884, 2097355, 3355768, 4194710, 8389420, 16778840]

約数ペア:

[(1, 16778840), (2, 8389420), (4, 4194710), (5, 3355768), (8, 2097355), (10, 1677884), (13, 1290680), (20, 838942), (26, 645340), (40, 419471), (41, 409240), (52, 322670), (65, 258136), (82, 204620), (104, 161335), (130, 129068), (164, 102310), (205, 81848), (260, 64534), (328, 51155), (410, 40924), (520, 32267), (533, 31480), (787, 21320), (820, 20462), (1066, 15740), (1574, 10660), (1640, 10231), (2132, 7870), (2665, 6296), (3148, 5330), (3935, 4264)]