21795075

素因数分解:

$3^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:298

約数の個数: 60

約数和(自身を含む): 41411040

約数和(自身を除く): 19615965

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 81, 135, 141, 225, 229, 235, 405, 423, 675, 687, 705, 1145, 1175, 1269, 2025, 2061, 2115, 3435, 3525, 3807, 5725, 6183, 6345, 10305, 10575, 10763, 17175, 18549, 19035, 30915, 31725, 32289, 51525, 53815, 92745, 95175, 96867, 154575, 161445, 269075, 290601, 463725, 484335, 807225, 871803, 1453005, 2421675, 4359015, 7265025, 21795075]

約数ペア:

[(1, 21795075), (3, 7265025), (5, 4359015), (9, 2421675), (15, 1453005), (25, 871803), (27, 807225), (45, 484335), (47, 463725), (75, 290601), (81, 269075), (135, 161445), (141, 154575), (225, 96867), (229, 95175), (235, 92745), (405, 53815), (423, 51525), (675, 32289), (687, 31725), (705, 30915), (1145, 19035), (1175, 18549), (1269, 17175), (2025, 10763), (2061, 10575), (2115, 10305), (3435, 6345), (3525, 6183), (3807, 5725)]