157260440

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{64451}}^1$

素因数の和:64523

約数の個数: 32

約数和(自身を含む): 359642160

約数和(自身を除く): 202381720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 64451, 128902, 257804, 322255, 515608, 644510, 1289020, 2578040, 3931511, 7863022, 15726044, 19657555, 31452088, 39315110, 78630220, 157260440]

約数ペア:

[(1, 157260440), (2, 78630220), (4, 39315110), (5, 31452088), (8, 19657555), (10, 15726044), (20, 7863022), (40, 3931511), (61, 2578040), (122, 1289020), (244, 644510), (305, 515608), (488, 322255), (610, 257804), (1220, 128902), (2440, 64451)]