18869240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{277}}^1$

素因数の和:432

約数の個数: 64

約数和(自身を含む): 46236960

約数和(自身を除く): 27367720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 131, 260, 262, 277, 520, 524, 554, 655, 1048, 1108, 1310, 1385, 1703, 2216, 2620, 2770, 3406, 3601, 5240, 5540, 6812, 7202, 8515, 11080, 13624, 14404, 17030, 18005, 28808, 34060, 36010, 36287, 68120, 72020, 72574, 144040, 145148, 181435, 290296, 362870, 471731, 725740, 943462, 1451480, 1886924, 2358655, 3773848, 4717310, 9434620, 18869240]

約数ペア:

[(1, 18869240), (2, 9434620), (4, 4717310), (5, 3773848), (8, 2358655), (10, 1886924), (13, 1451480), (20, 943462), (26, 725740), (40, 471731), (52, 362870), (65, 290296), (104, 181435), (130, 145148), (131, 144040), (260, 72574), (262, 72020), (277, 68120), (520, 36287), (524, 36010), (554, 34060), (655, 28808), (1048, 18005), (1108, 17030), (1310, 14404), (1385, 13624), (1703, 11080), (2216, 8515), (2620, 7202), (2770, 6812), (3406, 5540), (3601, 5240)]