20099440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{14779}}^1$

素因数の和:14809

約数の個数: 40

約数和(自身を含む): 49483440

約数和(自身を除く): 29384000

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 14779, 29558, 59116, 73895, 118232, 147790, 236464, 251243, 295580, 502486, 591160, 1004972, 1182320, 1256215, 2009944, 2512430, 4019888, 5024860, 10049720, 20099440]

約数ペア:

[(1, 20099440), (2, 10049720), (4, 5024860), (5, 4019888), (8, 2512430), (10, 2009944), (16, 1256215), (17, 1182320), (20, 1004972), (34, 591160), (40, 502486), (68, 295580), (80, 251243), (85, 236464), (136, 147790), (170, 118232), (272, 73895), (340, 59116), (680, 29558), (1360, 14779)]