81281880

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{25087}}^1$

素因数の和:25110

約数の個数: 80

約数和(自身を含む): 273208320

約数和(自身を除く): 191926440

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 25087, 50174, 75261, 100348, 125435, 150522, 200696, 225783, 250870, 301044, 376305, 451566, 501740, 602088, 677349, 752610, 903132, 1003480, 1128915, 1354698, 1505220, 1806264, 2032047, 2257830, 2709396, 3010440, 3386745, 4064094, 4515660, 5418792, 6773490, 8128188, 9031320, 10160235, 13546980, 16256376, 20320470, 27093960, 40640940, 81281880]

約数ペア:

[(1, 81281880), (2, 40640940), (3, 27093960), (4, 20320470), (5, 16256376), (6, 13546980), (8, 10160235), (9, 9031320), (10, 8128188), (12, 6773490), (15, 5418792), (18, 4515660), (20, 4064094), (24, 3386745), (27, 3010440), (30, 2709396), (36, 2257830), (40, 2032047), (45, 1806264), (54, 1505220), (60, 1354698), (72, 1128915), (81, 1003480), (90, 903132), (108, 752610), (120, 677349), (135, 602088), (162, 501740), (180, 451566), (216, 376305), (270, 301044), (324, 250870), (360, 225783), (405, 200696), (540, 150522), (648, 125435), (810, 100348), (1080, 75261), (1620, 50174), (3240, 25087)]