20625840

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{1061}}^1$

素因数の和:1089

約数の個数: 120

約数和(自身を含む): 71901648

約数和(自身を除く): 51275808

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, 1061, 1080, 1215, 1296, 1620, 1944, 2122, 2160, 2430, 3183, 3240, 3888, 4244, 4860, 5305, 6366, 6480, 8488, 9549, 9720, 10610, 12732, 15915, 16976, 19098, 19440, 21220, 25464, 28647, 31830, 38196, 42440, 47745, 50928, 57294, 63660, 76392, 84880, 85941, 95490, 114588, 127320, 143235, 152784, 171882, 190980, 229176, 254640, 257823, 286470, 343764, 381960, 429705, 458352, 515646, 572940, 687528, 763920, 859410, 1031292, 1145880, 1289115, 1375056, 1718820, 2062584, 2291760, 2578230, 3437640, 4125168, 5156460, 6875280, 10312920, 20625840]

約数ペア:

[(1, 20625840), (2, 10312920), (3, 6875280), (4, 5156460), (5, 4125168), (6, 3437640), (8, 2578230), (9, 2291760), (10, 2062584), (12, 1718820), (15, 1375056), (16, 1289115), (18, 1145880), (20, 1031292), (24, 859410), (27, 763920), (30, 687528), (36, 572940), (40, 515646), (45, 458352), (48, 429705), (54, 381960), (60, 343764), (72, 286470), (80, 257823), (81, 254640), (90, 229176), (108, 190980), (120, 171882), (135, 152784), (144, 143235), (162, 127320), (180, 114588), (216, 95490), (240, 85941), (243, 84880), (270, 76392), (324, 63660), (360, 57294), (405, 50928), (432, 47745), (486, 42440), (540, 38196), (648, 31830), (720, 28647), (810, 25464), (972, 21220), (1061, 19440), (1080, 19098), (1215, 16976), (1296, 15915), (1620, 12732), (1944, 10610), (2122, 9720), (2160, 9549), (2430, 8488), (3183, 6480), (3240, 6366), (3888, 5305), (4244, 4860)]