81811480

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{3881}}^1$

素因数の和:3940

約数の個数: 64

約数和(自身を含む): 201242880

約数和(自身を除く): 119431400

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 527, 620, 680, 1054, 1240, 2108, 2635, 3881, 4216, 5270, 7762, 10540, 15524, 19405, 21080, 31048, 38810, 65977, 77620, 120311, 131954, 155240, 240622, 263908, 329885, 481244, 527816, 601555, 659770, 962488, 1203110, 1319540, 2045287, 2406220, 2639080, 4090574, 4812440, 8181148, 10226435, 16362296, 20452870, 40905740, 81811480]

約数ペア:

[(1, 81811480), (2, 40905740), (4, 20452870), (5, 16362296), (8, 10226435), (10, 8181148), (17, 4812440), (20, 4090574), (31, 2639080), (34, 2406220), (40, 2045287), (62, 1319540), (68, 1203110), (85, 962488), (124, 659770), (136, 601555), (155, 527816), (170, 481244), (248, 329885), (310, 263908), (340, 240622), (527, 155240), (620, 131954), (680, 120311), (1054, 77620), (1240, 65977), (2108, 38810), (2635, 31048), (3881, 21080), (4216, 19405), (5270, 15524), (7762, 10540)]