18391240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3457}}^1$

素因数の和:3494

約数の個数: 64

約数和(自身を含む): 49795200

約数和(自身を除く): 31403960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 3457, 5320, 6914, 13828, 17285, 24199, 27656, 34570, 48398, 65683, 69140, 96796, 120995, 131366, 138280, 193592, 241990, 262732, 328415, 459781, 483980, 525464, 656830, 919562, 967960, 1313660, 1839124, 2298905, 2627320, 3678248, 4597810, 9195620, 18391240]

約数ペア:

[(1, 18391240), (2, 9195620), (4, 4597810), (5, 3678248), (7, 2627320), (8, 2298905), (10, 1839124), (14, 1313660), (19, 967960), (20, 919562), (28, 656830), (35, 525464), (38, 483980), (40, 459781), (56, 328415), (70, 262732), (76, 241990), (95, 193592), (133, 138280), (140, 131366), (152, 120995), (190, 96796), (266, 69140), (280, 65683), (380, 48398), (532, 34570), (665, 27656), (760, 24199), (1064, 17285), (1330, 13828), (2660, 6914), (3457, 5320)]