18841978180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{367}}^1\times {\mathrm{28843}}^1$

素因数の和:29308

約数の個数: 48

約数和(自身を含む): 40123157760

約数和(自身を除く): 21281179580

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 367, 445, 734, 890, 1468, 1780, 1835, 3670, 7340, 28843, 32663, 57686, 65326, 115372, 130652, 144215, 163315, 288430, 326630, 576860, 653260, 2567027, 5134054, 10268108, 10585381, 12835135, 21170762, 25670270, 42341524, 51340540, 52926905, 105853810, 211707620, 942098909, 1884197818, 3768395636, 4710494545, 9420989090, 18841978180]

約数ペア:

[(1, 18841978180), (2, 9420989090), (4, 4710494545), (5, 3768395636), (10, 1884197818), (20, 942098909), (89, 211707620), (178, 105853810), (356, 52926905), (367, 51340540), (445, 42341524), (734, 25670270), (890, 21170762), (1468, 12835135), (1780, 10585381), (1835, 10268108), (3670, 5134054), (7340, 2567027), (28843, 653260), (32663, 576860), (57686, 326630), (65326, 288430), (115372, 163315), (130652, 144215)]