18727160

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{601}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 45511200

約数和(自身を除く): 26784040

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 41, 76, 82, 95, 152, 164, 190, 205, 328, 380, 410, 601, 760, 779, 820, 1202, 1558, 1640, 2404, 3005, 3116, 3895, 4808, 6010, 6232, 7790, 11419, 12020, 15580, 22838, 24040, 24641, 31160, 45676, 49282, 57095, 91352, 98564, 114190, 123205, 197128, 228380, 246410, 456760, 468179, 492820, 936358, 985640, 1872716, 2340895, 3745432, 4681790, 9363580, 18727160]

約数ペア:

[(1, 18727160), (2, 9363580), (4, 4681790), (5, 3745432), (8, 2340895), (10, 1872716), (19, 985640), (20, 936358), (38, 492820), (40, 468179), (41, 456760), (76, 246410), (82, 228380), (95, 197128), (152, 123205), (164, 114190), (190, 98564), (205, 91352), (328, 57095), (380, 49282), (410, 45676), (601, 31160), (760, 24641), (779, 24040), (820, 22838), (1202, 15580), (1558, 12020), (1640, 11419), (2404, 7790), (3005, 6232), (3116, 6010), (3895, 4808)]