21971925

素因数分解:

$3^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{757}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 41356480

約数和(自身を除く): 19384555

約数列:

[1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 129, 135, 215, 225, 387, 645, 675, 757, 1075, 1161, 1935, 2271, 3225, 3785, 5805, 6813, 9675, 11355, 18925, 20439, 29025, 32551, 34065, 56775, 97653, 102195, 162755, 170325, 292959, 488265, 510975, 813775, 878877, 1464795, 2441325, 4394385, 7323975, 21971925]

約数ペア:

[(1, 21971925), (3, 7323975), (5, 4394385), (9, 2441325), (15, 1464795), (25, 878877), (27, 813775), (43, 510975), (45, 488265), (75, 292959), (129, 170325), (135, 162755), (215, 102195), (225, 97653), (387, 56775), (645, 34065), (675, 32551), (757, 29025), (1075, 20439), (1161, 18925), (1935, 11355), (2271, 9675), (3225, 6813), (3785, 5805)]