21150688

素因数分解:

$2^5\times {\mathrm{13}}^2\times {\mathrm{3911}}^1$

素因数の和:3947

約数の個数: 36

約数和(自身を含む): 45101448

約数和(自身を除く): 23950760

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 104, 169, 208, 338, 416, 676, 1352, 2704, 3911, 5408, 7822, 15644, 31288, 50843, 62576, 101686, 125152, 203372, 406744, 660959, 813488, 1321918, 1626976, 2643836, 5287672, 10575344, 21150688]

約数ペア:

[(1, 21150688), (2, 10575344), (4, 5287672), (8, 2643836), (13, 1626976), (16, 1321918), (26, 813488), (32, 660959), (52, 406744), (104, 203372), (169, 125152), (208, 101686), (338, 62576), (416, 50843), (676, 31288), (1352, 15644), (2704, 7822), (3911, 5408)]