20310225

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{563}}^1$

素因数の和:626

約数の個数: 48

約数和(自身を含む): 37205952

約数和(自身を除く): 16895727

約数列:

[1, 3, 5, 13, 15, 25, 37, 39, 65, 75, 111, 185, 195, 325, 481, 555, 563, 925, 975, 1443, 1689, 2405, 2775, 2815, 7215, 7319, 8445, 12025, 14075, 20831, 21957, 36075, 36595, 42225, 62493, 104155, 109785, 182975, 270803, 312465, 520775, 548925, 812409, 1354015, 1562325, 4062045, 6770075, 20310225]

約数ペア:

[(1, 20310225), (3, 6770075), (5, 4062045), (13, 1562325), (15, 1354015), (25, 812409), (37, 548925), (39, 520775), (65, 312465), (75, 270803), (111, 182975), (185, 109785), (195, 104155), (325, 62493), (481, 42225), (555, 36595), (563, 36075), (925, 21957), (975, 20831), (1443, 14075), (1689, 12025), (2405, 8445), (2775, 7319), (2815, 7215)]