19905720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{5351}}^1$

素因数の和:5396

約数の個数: 64

約数和(自身を含む): 61655040

約数和(自身を除く): 41749320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 31, 40, 60, 62, 93, 120, 124, 155, 186, 248, 310, 372, 465, 620, 744, 930, 1240, 1860, 3720, 5351, 10702, 16053, 21404, 26755, 32106, 42808, 53510, 64212, 80265, 107020, 128424, 160530, 165881, 214040, 321060, 331762, 497643, 642120, 663524, 829405, 995286, 1327048, 1658810, 1990572, 2488215, 3317620, 3981144, 4976430, 6635240, 9952860, 19905720]

約数ペア:

[(1, 19905720), (2, 9952860), (3, 6635240), (4, 4976430), (5, 3981144), (6, 3317620), (8, 2488215), (10, 1990572), (12, 1658810), (15, 1327048), (20, 995286), (24, 829405), (30, 663524), (31, 642120), (40, 497643), (60, 331762), (62, 321060), (93, 214040), (120, 165881), (124, 160530), (155, 128424), (186, 107020), (248, 80265), (310, 64212), (372, 53510), (465, 42808), (620, 32106), (744, 26755), (930, 21404), (1240, 16053), (1860, 10702), (3720, 5351)]