21797775

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{751}}^1$

素因数の和:813

約数の個数: 48

約数和(自身を含む): 41029120

約数和(自身を除く): 19231345

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 751, 1075, 1161, 1935, 2253, 3225, 3755, 5805, 6759, 9675, 11265, 18775, 20277, 29025, 32293, 33795, 56325, 96879, 101385, 161465, 168975, 290637, 484395, 506925, 807325, 871911, 1453185, 2421975, 4359555, 7265925, 21797775]

約数ペア:

[(1, 21797775), (3, 7265925), (5, 4359555), (9, 2421975), (15, 1453185), (25, 871911), (27, 807325), (43, 506925), (45, 484395), (75, 290637), (129, 168975), (135, 161465), (215, 101385), (225, 96879), (387, 56325), (645, 33795), (675, 32293), (751, 29025), (1075, 20277), (1161, 18775), (1935, 11265), (2253, 9675), (3225, 6759), (3755, 5805)]