21399852

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1997}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 53706240

約数和(自身を除く): 32306388

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 47, 57, 76, 94, 114, 141, 188, 228, 282, 564, 893, 1786, 1997, 2679, 3572, 3994, 5358, 5991, 7988, 10716, 11982, 23964, 37943, 75886, 93859, 113829, 151772, 187718, 227658, 281577, 375436, 455316, 563154, 1126308, 1783321, 3566642, 5349963, 7133284, 10699926, 21399852]

約数ペア:

[(1, 21399852), (2, 10699926), (3, 7133284), (4, 5349963), (6, 3566642), (12, 1783321), (19, 1126308), (38, 563154), (47, 455316), (57, 375436), (76, 281577), (94, 227658), (114, 187718), (141, 151772), (188, 113829), (228, 93859), (282, 75886), (564, 37943), (893, 23964), (1786, 11982), (1997, 10716), (2679, 7988), (3572, 5991), (3994, 5358)]