656260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:196

約数の個数: 48

約数和(自身を含む): 1592640

約数和(自身を除く): 936380

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 157, 190, 209, 220, 314, 380, 418, 628, 785, 836, 1045, 1570, 1727, 2090, 2983, 3140, 3454, 4180, 5966, 6908, 8635, 11932, 14915, 17270, 29830, 32813, 34540, 59660, 65626, 131252, 164065, 328130, 656260]

約数ペア:

[(1, 656260), (2, 328130), (4, 164065), (5, 131252), (10, 65626), (11, 59660), (19, 34540), (20, 32813), (22, 29830), (38, 17270), (44, 14915), (55, 11932), (76, 8635), (95, 6908), (110, 5966), (157, 4180), (190, 3454), (209, 3140), (220, 2983), (314, 2090), (380, 1727), (418, 1570), (628, 1045), (785, 836)]