131528013

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{521}}^1$

素因数の和:689

約数の個数: 32

約数和(自身を含む): 191093760

約数和(自身を除く): 59565747

約数列:

[1, 3, 19, 43, 57, 103, 129, 309, 521, 817, 1563, 1957, 2451, 4429, 5871, 9899, 13287, 22403, 29697, 53663, 67209, 84151, 160989, 252453, 425657, 1019597, 1276971, 2307509, 3058791, 6922527, 43842671, 131528013]

約数ペア:

[(1, 131528013), (3, 43842671), (19, 6922527), (43, 3058791), (57, 2307509), (103, 1276971), (129, 1019597), (309, 425657), (521, 252453), (817, 160989), (1563, 84151), (1957, 67209), (2451, 53663), (4429, 29697), (5871, 22403), (9899, 13287)]