21362848

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{577}}^1$

素因数の和:689

約数の個数: 48

約数和(自身を含む): 45881640

約数和(自身を除く): 24518792

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 89, 104, 178, 208, 356, 416, 577, 712, 1154, 1157, 1424, 2308, 2314, 2848, 4616, 4628, 7501, 9232, 9256, 15002, 18464, 18512, 30004, 37024, 51353, 60008, 102706, 120016, 205412, 240032, 410824, 667589, 821648, 1335178, 1643296, 2670356, 5340712, 10681424, 21362848]

約数ペア:

[(1, 21362848), (2, 10681424), (4, 5340712), (8, 2670356), (13, 1643296), (16, 1335178), (26, 821648), (32, 667589), (52, 410824), (89, 240032), (104, 205412), (178, 120016), (208, 102706), (356, 60008), (416, 51353), (577, 37024), (712, 30004), (1154, 18512), (1157, 18464), (1424, 15002), (2308, 9256), (2314, 9232), (2848, 7501), (4616, 4628)]