21469640

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31573}}^1$

素因数の和:31601

約数の個数: 32

約数和(自身を含む): 51149880

約数和(自身を除く): 29680240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 31573, 63146, 126292, 157865, 252584, 315730, 536741, 631460, 1073482, 1262920, 2146964, 2683705, 4293928, 5367410, 10734820, 21469640]

約数ペア:

[(1, 21469640), (2, 10734820), (4, 5367410), (5, 4293928), (8, 2683705), (10, 2146964), (17, 1262920), (20, 1073482), (34, 631460), (40, 536741), (68, 315730), (85, 252584), (136, 157865), (170, 126292), (340, 63146), (680, 31573)]