21063875

素因数分解:

$5^3\times 7^2\times {\mathrm{19}}^1\times {\mathrm{181}}^1$

素因数の和:229

約数の個数: 48

約数和(自身を含む): 32366880

約数和(自身を除く): 11303005

約数列:

[1, 5, 7, 19, 25, 35, 49, 95, 125, 133, 175, 181, 245, 475, 665, 875, 905, 931, 1225, 1267, 2375, 3325, 3439, 4525, 4655, 6125, 6335, 8869, 16625, 17195, 22625, 23275, 24073, 31675, 44345, 85975, 116375, 120365, 158375, 168511, 221725, 429875, 601825, 842555, 1108625, 3009125, 4212775, 21063875]

約数ペア:

[(1, 21063875), (5, 4212775), (7, 3009125), (19, 1108625), (25, 842555), (35, 601825), (49, 429875), (95, 221725), (125, 168511), (133, 158375), (175, 120365), (181, 116375), (245, 85975), (475, 44345), (665, 31675), (875, 24073), (905, 23275), (931, 22625), (1225, 17195), (1267, 16625), (2375, 8869), (3325, 6335), (3439, 6125), (4525, 4655)]