20824375

素因数分解:

$5^4\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{233}}^1$

素因数の和:277

約数の個数: 40

約数和(自身を含む): 30702672

約数和(自身を除く): 9878297

約数列:

[1, 5, 11, 13, 25, 55, 65, 125, 143, 233, 275, 325, 625, 715, 1165, 1375, 1625, 2563, 3029, 3575, 5825, 6875, 8125, 12815, 15145, 17875, 29125, 33319, 64075, 75725, 89375, 145625, 166595, 320375, 378625, 832975, 1601875, 1893125, 4164875, 20824375]

約数ペア:

[(1, 20824375), (5, 4164875), (11, 1893125), (13, 1601875), (25, 832975), (55, 378625), (65, 320375), (125, 166595), (143, 145625), (233, 89375), (275, 75725), (325, 64075), (625, 33319), (715, 29125), (1165, 17875), (1375, 15145), (1625, 12815), (2563, 8125), (3029, 6875), (3575, 5825)]