21887810

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2351}}^1$

素因数の和:2391

約数の個数: 48

約数和(自身を含む): 48263040

約数和(自身を除く): 26375230

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2351, 4655, 4702, 9310, 11755, 16457, 23510, 32914, 44669, 82285, 89338, 115199, 164570, 223345, 230398, 312683, 446690, 575995, 625366, 1151990, 1563415, 2188781, 3126830, 4377562, 10943905, 21887810]

約数ペア:

[(1, 21887810), (2, 10943905), (5, 4377562), (7, 3126830), (10, 2188781), (14, 1563415), (19, 1151990), (35, 625366), (38, 575995), (49, 446690), (70, 312683), (95, 230398), (98, 223345), (133, 164570), (190, 115199), (245, 89338), (266, 82285), (490, 44669), (665, 32914), (931, 23510), (1330, 16457), (1862, 11755), (2351, 9310), (4655, 4702)]