20212790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1747}}^1$

素因数の和:1856

約数の個数: 32

約数和(自身を含む): 39644640

約数和(自身を除く): 19431850

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 1747, 2314, 3494, 5785, 8735, 11570, 17470, 22711, 45422, 113555, 155483, 227110, 310966, 777415, 1554830, 2021279, 4042558, 10106395, 20212790]

約数ペア:

[(1, 20212790), (2, 10106395), (5, 4042558), (10, 2021279), (13, 1554830), (26, 777415), (65, 310966), (89, 227110), (130, 155483), (178, 113555), (445, 45422), (890, 22711), (1157, 17470), (1747, 11570), (2314, 8735), (3494, 5785)]