1978156980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{2081}}^1\times {\mathrm{5281}}^1$

素因数の和:7377

約数の個数: 72

約数和(自身を含む): 6004429704

約数和(自身を除く): 4026272724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 2081, 4162, 5281, 6243, 8324, 10405, 10562, 12486, 15843, 18729, 20810, 21124, 24972, 26405, 31215, 31686, 37458, 41620, 47529, 52810, 62430, 63372, 74916, 79215, 93645, 95058, 105620, 124860, 158430, 187290, 190116, 237645, 316860, 374580, 475290, 950580, 10989761, 21979522, 32969283, 43959044, 54948805, 65938566, 98907849, 109897610, 131877132, 164846415, 197815698, 219795220, 329692830, 395631396, 494539245, 659385660, 989078490, 1978156980]

約数ペア:

[(1, 1978156980), (2, 989078490), (3, 659385660), (4, 494539245), (5, 395631396), (6, 329692830), (9, 219795220), (10, 197815698), (12, 164846415), (15, 131877132), (18, 109897610), (20, 98907849), (30, 65938566), (36, 54948805), (45, 43959044), (60, 32969283), (90, 21979522), (180, 10989761), (2081, 950580), (4162, 475290), (5281, 374580), (6243, 316860), (8324, 237645), (10405, 190116), (10562, 187290), (12486, 158430), (15843, 124860), (18729, 105620), (20810, 95058), (21124, 93645), (24972, 79215), (26405, 74916), (31215, 63372), (31686, 62430), (37458, 52810), (41620, 47529)]