20148380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{2027}}^1$

素因数の和:2114

約数の個数: 48

約数和(自身を含む): 49061376

約数和(自身を除く): 28912996

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 994, 1420, 1988, 2027, 2485, 4054, 4970, 8108, 9940, 10135, 14189, 20270, 28378, 40540, 56756, 70945, 141890, 143917, 283780, 287834, 575668, 719585, 1007419, 1439170, 2014838, 2878340, 4029676, 5037095, 10074190, 20148380]

約数ペア:

[(1, 20148380), (2, 10074190), (4, 5037095), (5, 4029676), (7, 2878340), (10, 2014838), (14, 1439170), (20, 1007419), (28, 719585), (35, 575668), (70, 287834), (71, 283780), (140, 143917), (142, 141890), (284, 70945), (355, 56756), (497, 40540), (710, 28378), (994, 20270), (1420, 14189), (1988, 10135), (2027, 9940), (2485, 8108), (4054, 4970)]