21195825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{859}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 40949760

約数和(自身を除く): 19753935

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 47, 75, 105, 141, 175, 235, 329, 525, 705, 859, 987, 1175, 1645, 2577, 3525, 4295, 4935, 6013, 8225, 12885, 18039, 21475, 24675, 30065, 40373, 64425, 90195, 121119, 150325, 201865, 282611, 450975, 605595, 847833, 1009325, 1413055, 3027975, 4239165, 7065275, 21195825]

約数ペア:

[(1, 21195825), (3, 7065275), (5, 4239165), (7, 3027975), (15, 1413055), (21, 1009325), (25, 847833), (35, 605595), (47, 450975), (75, 282611), (105, 201865), (141, 150325), (175, 121119), (235, 90195), (329, 64425), (525, 40373), (705, 30065), (859, 24675), (987, 21475), (1175, 18039), (1645, 12885), (2577, 8225), (3525, 6013), (4295, 4935)]