20631560

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{1231}}^1$

素因数の和:1661

約数の個数: 32

約数和(自身を含む): 46569600

約数和(自身を除く): 25938040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1231, 1676, 2095, 2462, 3352, 4190, 4924, 6155, 8380, 9848, 12310, 16760, 24620, 49240, 515789, 1031578, 2063156, 2578945, 4126312, 5157890, 10315780, 20631560]

約数ペア:

[(1, 20631560), (2, 10315780), (4, 5157890), (5, 4126312), (8, 2578945), (10, 2063156), (20, 1031578), (40, 515789), (419, 49240), (838, 24620), (1231, 16760), (1676, 12310), (2095, 9848), (2462, 8380), (3352, 6155), (4190, 4924)]