256480740

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{269}}^1\times {\mathrm{5297}}^1$

素因数の和:5581

約数の個数: 72

約数和(自身を含む): 781031160

約数和(自身を除く): 524550420

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 269, 538, 807, 1076, 1345, 1614, 2421, 2690, 3228, 4035, 4842, 5297, 5380, 8070, 9684, 10594, 12105, 15891, 16140, 21188, 24210, 26485, 31782, 47673, 48420, 52970, 63564, 79455, 95346, 105940, 158910, 190692, 238365, 317820, 476730, 953460, 1424893, 2849786, 4274679, 5699572, 7124465, 8549358, 12824037, 14248930, 17098716, 21373395, 25648074, 28497860, 42746790, 51296148, 64120185, 85493580, 128240370, 256480740]

約数ペア:

[(1, 256480740), (2, 128240370), (3, 85493580), (4, 64120185), (5, 51296148), (6, 42746790), (9, 28497860), (10, 25648074), (12, 21373395), (15, 17098716), (18, 14248930), (20, 12824037), (30, 8549358), (36, 7124465), (45, 5699572), (60, 4274679), (90, 2849786), (180, 1424893), (269, 953460), (538, 476730), (807, 317820), (1076, 238365), (1345, 190692), (1614, 158910), (2421, 105940), (2690, 95346), (3228, 79455), (4035, 63564), (4842, 52970), (5297, 48420), (5380, 47673), (8070, 31782), (9684, 26485), (10594, 24210), (12105, 21188), (15891, 16140)]