20999520

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{4861}}^1$

素因数の和:4885

約数の個数: 96

約数和(自身を含む): 73513440

約数和(自身を除く): 52513920

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 40, 45, 48, 54, 60, 72, 80, 90, 96, 108, 120, 135, 144, 160, 180, 216, 240, 270, 288, 360, 432, 480, 540, 720, 864, 1080, 1440, 2160, 4320, 4861, 9722, 14583, 19444, 24305, 29166, 38888, 43749, 48610, 58332, 72915, 77776, 87498, 97220, 116664, 131247, 145830, 155552, 174996, 194440, 218745, 233328, 262494, 291660, 349992, 388880, 437490, 466656, 524988, 583320, 656235, 699984, 777760, 874980, 1049976, 1166640, 1312470, 1399968, 1749960, 2099952, 2333280, 2624940, 3499920, 4199904, 5249880, 6999840, 10499760, 20999520]

約数ペア:

[(1, 20999520), (2, 10499760), (3, 6999840), (4, 5249880), (5, 4199904), (6, 3499920), (8, 2624940), (9, 2333280), (10, 2099952), (12, 1749960), (15, 1399968), (16, 1312470), (18, 1166640), (20, 1049976), (24, 874980), (27, 777760), (30, 699984), (32, 656235), (36, 583320), (40, 524988), (45, 466656), (48, 437490), (54, 388880), (60, 349992), (72, 291660), (80, 262494), (90, 233328), (96, 218745), (108, 194440), (120, 174996), (135, 155552), (144, 145830), (160, 131247), (180, 116664), (216, 97220), (240, 87498), (270, 77776), (288, 72915), (360, 58332), (432, 48610), (480, 43749), (540, 38888), (720, 29166), (864, 24305), (1080, 19444), (1440, 14583), (2160, 9722), (4320, 4861)]