218557781

素因数分解:

${\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{5591}}^1$

素因数の和:5732

約数の個数: 16

約数和(自身を含む): 245511168

約数和(自身を除く): 26953387

約数列:

[1, 13, 31, 97, 403, 1261, 3007, 5591, 39091, 72683, 173321, 542327, 2253173, 7050251, 16812137, 218557781]

約数ペア:

[(1, 218557781), (13, 16812137), (31, 7050251), (97, 2253173), (403, 542327), (1261, 173321), (3007, 72683), (5591, 39091)]