19690253680

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1878841}}^1$

素因数の和:1878985

約数の個数: 40

約数和(自身を含む): 46129328784

約数和(自身を除く): 26439075104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 262, 524, 655, 1048, 1310, 2096, 2620, 5240, 10480, 1878841, 3757682, 7515364, 9394205, 15030728, 18788410, 30061456, 37576820, 75153640, 150307280, 246128171, 492256342, 984512684, 1230640855, 1969025368, 2461281710, 3938050736, 4922563420, 9845126840, 19690253680]

約数ペア:

[(1, 19690253680), (2, 9845126840), (4, 4922563420), (5, 3938050736), (8, 2461281710), (10, 1969025368), (16, 1230640855), (20, 984512684), (40, 492256342), (80, 246128171), (131, 150307280), (262, 75153640), (524, 37576820), (655, 30061456), (1048, 18788410), (1310, 15030728), (2096, 9394205), (2620, 7515364), (5240, 3757682), (10480, 1878841)]