156804920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{55213}}^1$

素因数の和:55295

約数の個数: 32

約数和(自身を含む): 357786720

約数和(自身を除く): 200981800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 55213, 110426, 220852, 276065, 441704, 552130, 1104260, 2208520, 3920123, 7840246, 15680492, 19600615, 31360984, 39201230, 78402460, 156804920]

約数ペア:

[(1, 156804920), (2, 78402460), (4, 39201230), (5, 31360984), (8, 19600615), (10, 15680492), (20, 7840246), (40, 3920123), (71, 2208520), (142, 1104260), (284, 552130), (355, 441704), (568, 276065), (710, 220852), (1420, 110426), (2840, 55213)]