21228490

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{47}}^2$

素因数の和:163

約数の個数: 36

約数和(自身を含む): 40341618

約数和(自身を除く): 19113128

約数列:

[1, 2, 5, 10, 31, 47, 62, 94, 155, 235, 310, 470, 961, 1457, 1922, 2209, 2914, 4418, 4805, 7285, 9610, 11045, 14570, 22090, 45167, 68479, 90334, 136958, 225835, 342395, 451670, 684790, 2122849, 4245698, 10614245, 21228490]

約数ペア:

[(1, 21228490), (2, 10614245), (5, 4245698), (10, 2122849), (31, 684790), (47, 451670), (62, 342395), (94, 225835), (155, 136958), (235, 90334), (310, 68479), (470, 45167), (961, 22090), (1457, 14570), (1922, 11045), (2209, 9610), (2914, 7285), (4418, 4805)]