81231156

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1153}}^1$

素因数の和:1285

約数の個数: 72

約数和(自身を含む): 218429120

約数和(自身を除く): 137197964

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 103, 114, 171, 206, 228, 309, 342, 412, 618, 684, 927, 1153, 1236, 1854, 1957, 2306, 3459, 3708, 3914, 4612, 5871, 6918, 7828, 10377, 11742, 13836, 17613, 20754, 21907, 23484, 35226, 41508, 43814, 65721, 70452, 87628, 118759, 131442, 197163, 237518, 262884, 356277, 394326, 475036, 712554, 788652, 1068831, 1425108, 2137662, 2256421, 4275324, 4512842, 6769263, 9025684, 13538526, 20307789, 27077052, 40615578, 81231156]

約数ペア:

[(1, 81231156), (2, 40615578), (3, 27077052), (4, 20307789), (6, 13538526), (9, 9025684), (12, 6769263), (18, 4512842), (19, 4275324), (36, 2256421), (38, 2137662), (57, 1425108), (76, 1068831), (103, 788652), (114, 712554), (171, 475036), (206, 394326), (228, 356277), (309, 262884), (342, 237518), (412, 197163), (618, 131442), (684, 118759), (927, 87628), (1153, 70452), (1236, 65721), (1854, 43814), (1957, 41508), (2306, 35226), (3459, 23484), (3708, 21907), (3914, 20754), (4612, 17613), (5871, 13836), (6918, 11742), (7828, 10377)]