638467920

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{32843}}^1$

素因数の和:32871

約数の個数: 120

約数和(自身を含む): 2223670176

約数和(自身を除く): 1585202256

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1215, 1296, 1620, 1944, 2160, 2430, 3240, 3888, 4860, 6480, 9720, 19440, 32843, 65686, 98529, 131372, 164215, 197058, 262744, 295587, 328430, 394116, 492645, 525488, 591174, 656860, 788232, 886761, 985290, 1182348, 1313720, 1477935, 1576464, 1773522, 1970580, 2364696, 2627440, 2660283, 2955870, 3547044, 3941160, 4433805, 4729392, 5320566, 5911740, 7094088, 7882320, 7980849, 8867610, 10641132, 11823480, 13301415, 14188176, 15961698, 17735220, 21282264, 23646960, 26602830, 31923396, 35470440, 39904245, 42564528, 53205660, 63846792, 70940880, 79808490, 106411320, 127693584, 159616980, 212822640, 319233960, 638467920]

約数ペア:

[(1, 638467920), (2, 319233960), (3, 212822640), (4, 159616980), (5, 127693584), (6, 106411320), (8, 79808490), (9, 70940880), (10, 63846792), (12, 53205660), (15, 42564528), (16, 39904245), (18, 35470440), (20, 31923396), (24, 26602830), (27, 23646960), (30, 21282264), (36, 17735220), (40, 15961698), (45, 14188176), (48, 13301415), (54, 11823480), (60, 10641132), (72, 8867610), (80, 7980849), (81, 7882320), (90, 7094088), (108, 5911740), (120, 5320566), (135, 4729392), (144, 4433805), (162, 3941160), (180, 3547044), (216, 2955870), (240, 2660283), (243, 2627440), (270, 2364696), (324, 1970580), (360, 1773522), (405, 1576464), (432, 1477935), (486, 1313720), (540, 1182348), (648, 985290), (720, 886761), (810, 788232), (972, 656860), (1080, 591174), (1215, 525488), (1296, 492645), (1620, 394116), (1944, 328430), (2160, 295587), (2430, 262744), (3240, 197058), (3888, 164215), (4860, 131372), (6480, 98529), (9720, 65686), (19440, 32843)]