81451620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2297}}^1$

素因数の和:2509

約数の個数: 72

約数和(自身を含む): 248432184

約数和(自身を除く): 166980564

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 197, 394, 591, 788, 985, 1182, 1773, 1970, 2297, 2364, 2955, 3546, 3940, 4594, 5910, 6891, 7092, 8865, 9188, 11485, 11820, 13782, 17730, 20673, 22970, 27564, 34455, 35460, 41346, 45940, 68910, 82692, 103365, 137820, 206730, 413460, 452509, 905018, 1357527, 1810036, 2262545, 2715054, 4072581, 4525090, 5430108, 6787635, 8145162, 9050180, 13575270, 16290324, 20362905, 27150540, 40725810, 81451620]

約数ペア:

[(1, 81451620), (2, 40725810), (3, 27150540), (4, 20362905), (5, 16290324), (6, 13575270), (9, 9050180), (10, 8145162), (12, 6787635), (15, 5430108), (18, 4525090), (20, 4072581), (30, 2715054), (36, 2262545), (45, 1810036), (60, 1357527), (90, 905018), (180, 452509), (197, 413460), (394, 206730), (591, 137820), (788, 103365), (985, 82692), (1182, 68910), (1773, 45940), (1970, 41346), (2297, 35460), (2364, 34455), (2955, 27564), (3546, 22970), (3940, 20673), (4594, 17730), (5910, 13782), (6891, 11820), (7092, 11485), (8865, 9188)]