19780050

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{163}}^1\times {\mathrm{809}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 49416480

約数和(自身を除く): 29636430

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 150, 163, 326, 489, 809, 815, 978, 1618, 1630, 2427, 2445, 4045, 4075, 4854, 4890, 8090, 8150, 12135, 12225, 20225, 24270, 24450, 40450, 60675, 121350, 131867, 263734, 395601, 659335, 791202, 1318670, 1978005, 3296675, 3956010, 6593350, 9890025, 19780050]

約数ペア:

[(1, 19780050), (2, 9890025), (3, 6593350), (5, 3956010), (6, 3296675), (10, 1978005), (15, 1318670), (25, 791202), (30, 659335), (50, 395601), (75, 263734), (150, 131867), (163, 121350), (326, 60675), (489, 40450), (809, 24450), (815, 24270), (978, 20225), (1618, 12225), (1630, 12135), (2427, 8150), (2445, 8090), (4045, 4890), (4075, 4854)]