81521640

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{8387}}^1$

素因数の和:8413

約数の個数: 96

約数和(自身を含む): 274790880

約数和(自身を除く): 193269240

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, 243, 270, 324, 360, 405, 486, 540, 648, 810, 972, 1080, 1215, 1620, 1944, 2430, 3240, 4860, 8387, 9720, 16774, 25161, 33548, 41935, 50322, 67096, 75483, 83870, 100644, 125805, 150966, 167740, 201288, 226449, 251610, 301932, 335480, 377415, 452898, 503220, 603864, 679347, 754830, 905796, 1006440, 1132245, 1358694, 1509660, 1811592, 2038041, 2264490, 2717388, 3019320, 3396735, 4076082, 4528980, 5434776, 6793470, 8152164, 9057960, 10190205, 13586940, 16304328, 20380410, 27173880, 40760820, 81521640]

約数ペア:

[(1, 81521640), (2, 40760820), (3, 27173880), (4, 20380410), (5, 16304328), (6, 13586940), (8, 10190205), (9, 9057960), (10, 8152164), (12, 6793470), (15, 5434776), (18, 4528980), (20, 4076082), (24, 3396735), (27, 3019320), (30, 2717388), (36, 2264490), (40, 2038041), (45, 1811592), (54, 1509660), (60, 1358694), (72, 1132245), (81, 1006440), (90, 905796), (108, 754830), (120, 679347), (135, 603864), (162, 503220), (180, 452898), (216, 377415), (243, 335480), (270, 301932), (324, 251610), (360, 226449), (405, 201288), (486, 167740), (540, 150966), (648, 125805), (810, 100644), (972, 83870), (1080, 75483), (1215, 67096), (1620, 50322), (1944, 41935), (2430, 33548), (3240, 25161), (4860, 16774), (8387, 9720)]