18127431

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 31337280

約数和(自身を除く): 13209849

約数列:

[1, 3, 7, 9, 21, 53, 61, 63, 89, 159, 183, 267, 371, 427, 477, 549, 623, 801, 1113, 1281, 1869, 3233, 3339, 3843, 4717, 5429, 5607, 9699, 14151, 16287, 22631, 29097, 33019, 38003, 42453, 48861, 67893, 99057, 114009, 203679, 287737, 297171, 342027, 863211, 2014159, 2589633, 6042477, 18127431]

約数ペア:

[(1, 18127431), (3, 6042477), (7, 2589633), (9, 2014159), (21, 863211), (53, 342027), (61, 297171), (63, 287737), (89, 203679), (159, 114009), (183, 99057), (267, 67893), (371, 48861), (427, 42453), (477, 38003), (549, 33019), (623, 29097), (801, 22631), (1113, 16287), (1281, 14151), (1869, 9699), (3233, 5607), (3339, 5429), (3843, 4717)]