81880380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{454891}}^1$

素因数の和:454906

約数の個数: 36

約数和(自身を含む): 248371032

約数和(自身を除く): 166490652

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 454891, 909782, 1364673, 1819564, 2274455, 2729346, 4094019, 4548910, 5458692, 6823365, 8188038, 9097820, 13646730, 16376076, 20470095, 27293460, 40940190, 81880380]

約数ペア:

[(1, 81880380), (2, 40940190), (3, 27293460), (4, 20470095), (5, 16376076), (6, 13646730), (9, 9097820), (10, 8188038), (12, 6823365), (15, 5458692), (18, 4548910), (20, 4094019), (30, 2729346), (36, 2274455), (45, 1819564), (60, 1364673), (90, 909782), (180, 454891)]