180856520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{347801}}^1$

素因数の和:347825

約数の個数: 32

約数和(自身を含む): 438230520

約数和(自身を除く): 257374000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 347801, 695602, 1391204, 1739005, 2782408, 3478010, 4521413, 6956020, 9042826, 13912040, 18085652, 22607065, 36171304, 45214130, 90428260, 180856520]

約数ペア:

[(1, 180856520), (2, 90428260), (4, 45214130), (5, 36171304), (8, 22607065), (10, 18085652), (13, 13912040), (20, 9042826), (26, 6956020), (40, 4521413), (52, 3478010), (65, 2782408), (104, 1739005), (130, 1391204), (260, 695602), (520, 347801)]