21507120

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{3319}}^1$

素因数の和:3344

約数の個数: 100

約数和(自身を含む): 74719920

約数和(自身を除く): 53212800

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, 270, 324, 360, 405, 432, 540, 648, 720, 810, 1080, 1296, 1620, 2160, 3240, 3319, 6480, 6638, 9957, 13276, 16595, 19914, 26552, 29871, 33190, 39828, 49785, 53104, 59742, 66380, 79656, 89613, 99570, 119484, 132760, 149355, 159312, 179226, 199140, 238968, 265520, 268839, 298710, 358452, 398280, 448065, 477936, 537678, 597420, 716904, 796560, 896130, 1075356, 1194840, 1344195, 1433808, 1792260, 2150712, 2389680, 2688390, 3584520, 4301424, 5376780, 7169040, 10753560, 21507120]

約数ペア:

[(1, 21507120), (2, 10753560), (3, 7169040), (4, 5376780), (5, 4301424), (6, 3584520), (8, 2688390), (9, 2389680), (10, 2150712), (12, 1792260), (15, 1433808), (16, 1344195), (18, 1194840), (20, 1075356), (24, 896130), (27, 796560), (30, 716904), (36, 597420), (40, 537678), (45, 477936), (48, 448065), (54, 398280), (60, 358452), (72, 298710), (80, 268839), (81, 265520), (90, 238968), (108, 199140), (120, 179226), (135, 159312), (144, 149355), (162, 132760), (180, 119484), (216, 99570), (240, 89613), (270, 79656), (324, 66380), (360, 59742), (405, 53104), (432, 49785), (540, 39828), (648, 33190), (720, 29871), (810, 26552), (1080, 19914), (1296, 16595), (1620, 13276), (2160, 9957), (3240, 6638), (3319, 6480)]