8464040

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{397}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 21062160

約数和(自身を除く): 12598120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 397, 410, 520, 533, 794, 820, 1066, 1588, 1640, 1985, 2132, 2665, 3176, 3970, 4264, 5161, 5330, 7940, 10322, 10660, 15880, 16277, 20644, 21320, 25805, 32554, 41288, 51610, 65108, 81385, 103220, 130216, 162770, 206440, 211601, 325540, 423202, 651080, 846404, 1058005, 1692808, 2116010, 4232020, 8464040]

約数ペア:

[(1, 8464040), (2, 4232020), (4, 2116010), (5, 1692808), (8, 1058005), (10, 846404), (13, 651080), (20, 423202), (26, 325540), (40, 211601), (41, 206440), (52, 162770), (65, 130216), (82, 103220), (104, 81385), (130, 65108), (164, 51610), (205, 41288), (260, 32554), (328, 25805), (397, 21320), (410, 20644), (520, 16277), (533, 15880), (794, 10660), (820, 10322), (1066, 7940), (1588, 5330), (1640, 5161), (1985, 4264), (2132, 3970), (2665, 3176)]