19777360

素因数分解:

$2^4\times 5^1\times {\mathrm{173}}^1\times {\mathrm{1429}}^1$

素因数の和:1615

約数の個数: 40

約数和(自身を含む): 46280520

約数和(自身を除く): 26503160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 173, 346, 692, 865, 1384, 1429, 1730, 2768, 2858, 3460, 5716, 6920, 7145, 11432, 13840, 14290, 22864, 28580, 57160, 114320, 247217, 494434, 988868, 1236085, 1977736, 2472170, 3955472, 4944340, 9888680, 19777360]

約数ペア:

[(1, 19777360), (2, 9888680), (4, 4944340), (5, 3955472), (8, 2472170), (10, 1977736), (16, 1236085), (20, 988868), (40, 494434), (80, 247217), (173, 114320), (346, 57160), (692, 28580), (865, 22864), (1384, 14290), (1429, 13840), (1730, 11432), (2768, 7145), (2858, 6920), (3460, 5716)]