831297025

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{7919}}^1$

素因数の和:7978

約数の個数: 48

約数和(自身を含む): 1237420800

約数和(自身を除く): 406123775

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 323, 325, 425, 475, 1105, 1235, 1615, 4199, 5525, 6175, 7919, 8075, 20995, 39595, 102947, 104975, 134623, 150461, 197975, 514735, 673115, 752305, 1750099, 1955993, 2557837, 2573675, 3365575, 3761525, 8750495, 9779965, 12789185, 33251881, 43752475, 48899825, 63945925, 166259405, 831297025]

約数ペア:

[(1, 831297025), (5, 166259405), (13, 63945925), (17, 48899825), (19, 43752475), (25, 33251881), (65, 12789185), (85, 9779965), (95, 8750495), (221, 3761525), (247, 3365575), (323, 2573675), (325, 2557837), (425, 1955993), (475, 1750099), (1105, 752305), (1235, 673115), (1615, 514735), (4199, 197975), (5525, 150461), (6175, 134623), (7919, 104975), (8075, 102947), (20995, 39595)]