19017780

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{13781}}^1$

素因数の和:13816

約数の個数: 48

約数和(自身を含む): 55569024

約数和(自身を除く): 36551244

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 92, 115, 138, 230, 276, 345, 460, 690, 1380, 13781, 27562, 41343, 55124, 68905, 82686, 137810, 165372, 206715, 275620, 316963, 413430, 633926, 826860, 950889, 1267852, 1584815, 1901778, 3169630, 3803556, 4754445, 6339260, 9508890, 19017780]

約数ペア:

[(1, 19017780), (2, 9508890), (3, 6339260), (4, 4754445), (5, 3803556), (6, 3169630), (10, 1901778), (12, 1584815), (15, 1267852), (20, 950889), (23, 826860), (30, 633926), (46, 413430), (60, 316963), (69, 275620), (92, 206715), (115, 165372), (138, 137810), (230, 82686), (276, 68905), (345, 55124), (460, 41343), (690, 27562), (1380, 13781)]