18879211548

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{103}}^1\times {\mathrm{71711}}^1$

素因数の和:71895

約数の個数: 72

約数和(自身を含む): 48865130496

約数和(自身を除く): 29985918948

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 103, 142, 206, 213, 284, 309, 412, 426, 618, 639, 852, 927, 1236, 1278, 1854, 2556, 3708, 7313, 14626, 21939, 29252, 43878, 65817, 71711, 87756, 131634, 143422, 215133, 263268, 286844, 430266, 645399, 860532, 1290798, 2581596, 5091481, 7386233, 10182962, 14772466, 15274443, 20365924, 22158699, 29544932, 30548886, 44317398, 45823329, 61097772, 66476097, 88634796, 91646658, 132952194, 183293316, 265904388, 524422543, 1048845086, 1573267629, 2097690172, 3146535258, 4719802887, 6293070516, 9439605774, 18879211548]

約数ペア:

[(1, 18879211548), (2, 9439605774), (3, 6293070516), (4, 4719802887), (6, 3146535258), (9, 2097690172), (12, 1573267629), (18, 1048845086), (36, 524422543), (71, 265904388), (103, 183293316), (142, 132952194), (206, 91646658), (213, 88634796), (284, 66476097), (309, 61097772), (412, 45823329), (426, 44317398), (618, 30548886), (639, 29544932), (852, 22158699), (927, 20365924), (1236, 15274443), (1278, 14772466), (1854, 10182962), (2556, 7386233), (3708, 5091481), (7313, 2581596), (14626, 1290798), (21939, 860532), (29252, 645399), (43878, 430266), (65817, 286844), (71711, 263268), (87756, 215133), (131634, 143422)]