19008520

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{2131}}^1$

素因数の和:2365

約数の個数: 32

約数和(自身を含む): 42981120

約数和(自身を除く): 23972600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2131, 2230, 4262, 4460, 8524, 8920, 10655, 17048, 21310, 42620, 85240, 475213, 950426, 1900852, 2376065, 3801704, 4752130, 9504260, 19008520]

約数ペア:

[(1, 19008520), (2, 9504260), (4, 4752130), (5, 3801704), (8, 2376065), (10, 1900852), (20, 950426), (40, 475213), (223, 85240), (446, 42620), (892, 21310), (1115, 17048), (1784, 10655), (2131, 8920), (2230, 8524), (4262, 4460)]