21000766974736

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{77208702113}}^1$

素因数の和:77208702138

約数の個数: 20

約数和(自身を含む): 43082455779612

約数和(自身を除く): 22081688804876

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 77208702113, 154417404226, 308834808452, 617669616904, 1235339233808, 1312547935921, 2625095871842, 5250191743684, 10500383487368, 21000766974736]

約数ペア:

[(1, 21000766974736), (2, 10500383487368), (4, 5250191743684), (8, 2625095871842), (16, 1312547935921), (17, 1235339233808), (34, 617669616904), (68, 308834808452), (136, 154417404226), (272, 77208702113)]