19045420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:370

約数の個数: 48

約数和(自身を含む): 41434848

約数和(自身を除く): 22389428

約数列:

[1, 2, 4, 5, 10, 20, 61, 67, 122, 134, 233, 244, 268, 305, 335, 466, 610, 670, 932, 1165, 1220, 1340, 2330, 4087, 4660, 8174, 14213, 15611, 16348, 20435, 28426, 31222, 40870, 56852, 62444, 71065, 78055, 81740, 142130, 156110, 284260, 312220, 952271, 1904542, 3809084, 4761355, 9522710, 19045420]

約数ペア:

[(1, 19045420), (2, 9522710), (4, 4761355), (5, 3809084), (10, 1904542), (20, 952271), (61, 312220), (67, 284260), (122, 156110), (134, 142130), (233, 81740), (244, 78055), (268, 71065), (305, 62444), (335, 56852), (466, 40870), (610, 31222), (670, 28426), (932, 20435), (1165, 16348), (1220, 15611), (1340, 14213), (2330, 8174), (4087, 4660)]