400244

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{179}}^1$

素因数の和:239

約数の個数: 24

約数和(自身を含む): 776160

約数和(自身を除く): 375916

約数列:

[1, 2, 4, 13, 26, 43, 52, 86, 172, 179, 358, 559, 716, 1118, 2236, 2327, 4654, 7697, 9308, 15394, 30788, 100061, 200122, 400244]

約数ペア:

[(1, 400244), (2, 200122), (4, 100061), (13, 30788), (26, 15394), (43, 9308), (52, 7697), (86, 4654), (172, 2327), (179, 2236), (358, 1118), (559, 716)]