157853720

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{21803}}^1$

素因数の和:21995

約数の個数: 32

約数和(自身を含む): 357149520

約数和(自身を除く): 199295800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3620, 7240, 21803, 43606, 87212, 109015, 174424, 218030, 436060, 872120, 3946343, 7892686, 15785372, 19731715, 31570744, 39463430, 78926860, 157853720]

約数ペア:

[(1, 157853720), (2, 78926860), (4, 39463430), (5, 31570744), (8, 19731715), (10, 15785372), (20, 7892686), (40, 3946343), (181, 872120), (362, 436060), (724, 218030), (905, 174424), (1448, 109015), (1810, 87212), (3620, 43606), (7240, 21803)]