217123125

素因数分解:

$3^1\times 5^4\times {\mathrm{43}}^1\times {\mathrm{2693}}^1$

素因数の和:2759

約数の個数: 40

約数和(自身を含む): 370306464

約数和(自身を除く): 153183339

約数列:

[1, 3, 5, 15, 25, 43, 75, 125, 129, 215, 375, 625, 645, 1075, 1875, 2693, 3225, 5375, 8079, 13465, 16125, 26875, 40395, 67325, 80625, 115799, 201975, 336625, 347397, 578995, 1009875, 1683125, 1736985, 2894975, 5049375, 8684925, 14474875, 43424625, 72374375, 217123125]

約数ペア:

[(1, 217123125), (3, 72374375), (5, 43424625), (15, 14474875), (25, 8684925), (43, 5049375), (75, 2894975), (125, 1736985), (129, 1683125), (215, 1009875), (375, 578995), (625, 347397), (645, 336625), (1075, 201975), (1875, 115799), (2693, 80625), (3225, 67325), (5375, 40395), (8079, 26875), (13465, 16125)]