21070216

素因数分解:

$2^3\times {\mathrm{89}}^1\times {\mathrm{101}}^1\times {\mathrm{293}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 40483800

約数和(自身を除く): 19413584

約数列:

[1, 2, 4, 8, 89, 101, 178, 202, 293, 356, 404, 586, 712, 808, 1172, 2344, 8989, 17978, 26077, 29593, 35956, 52154, 59186, 71912, 104308, 118372, 208616, 236744, 2633777, 5267554, 10535108, 21070216]

約数ペア:

[(1, 21070216), (2, 10535108), (4, 5267554), (8, 2633777), (89, 236744), (101, 208616), (178, 118372), (202, 104308), (293, 71912), (356, 59186), (404, 52154), (586, 35956), (712, 29593), (808, 26077), (1172, 17978), (2344, 8989)]