20478010

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{173}}^1$

素因数の和:295

約数の個数: 64

約数和(自身を含む): 45100800

約数和(自身を除く): 24622790

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 89, 95, 133, 173, 178, 190, 266, 346, 445, 623, 665, 865, 890, 1211, 1246, 1330, 1691, 1730, 2422, 3115, 3287, 3382, 6055, 6230, 6574, 8455, 11837, 12110, 15397, 16435, 16910, 23009, 23674, 30794, 32870, 46018, 59185, 76985, 107779, 115045, 118370, 153970, 215558, 230090, 292543, 538895, 585086, 1077790, 1462715, 2047801, 2925430, 4095602, 10239005, 20478010]

約数ペア:

[(1, 20478010), (2, 10239005), (5, 4095602), (7, 2925430), (10, 2047801), (14, 1462715), (19, 1077790), (35, 585086), (38, 538895), (70, 292543), (89, 230090), (95, 215558), (133, 153970), (173, 118370), (178, 115045), (190, 107779), (266, 76985), (346, 59185), (445, 46018), (623, 32870), (665, 30794), (865, 23674), (890, 23009), (1211, 16910), (1246, 16435), (1330, 15397), (1691, 12110), (1730, 11837), (2422, 8455), (3115, 6574), (3287, 6230), (3382, 6055)]