20970075

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{677}}^1$

素因数の和:756

約数の個数: 48

約数和(自身を含む): 40354560

約数和(自身を除く): 19384485

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 59, 75, 105, 175, 177, 295, 413, 525, 677, 885, 1239, 1475, 2031, 2065, 3385, 4425, 4739, 6195, 10155, 10325, 14217, 16925, 23695, 30975, 39943, 50775, 71085, 118475, 119829, 199715, 279601, 355425, 599145, 838803, 998575, 1398005, 2995725, 4194015, 6990025, 20970075]

約数ペア:

[(1, 20970075), (3, 6990025), (5, 4194015), (7, 2995725), (15, 1398005), (21, 998575), (25, 838803), (35, 599145), (59, 355425), (75, 279601), (105, 199715), (175, 119829), (177, 118475), (295, 71085), (413, 50775), (525, 39943), (677, 30975), (885, 23695), (1239, 16925), (1475, 14217), (2031, 10325), (2065, 10155), (3385, 6195), (4425, 4739)]