20931480

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{19381}}^1$

素因数の和:19401

約数の個数: 64

約数和(自身を含む): 69775200

約数和(自身を除く): 48843720

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, 90, 108, 120, 135, 180, 216, 270, 360, 540, 1080, 19381, 38762, 58143, 77524, 96905, 116286, 155048, 174429, 193810, 232572, 290715, 348858, 387620, 465144, 523287, 581430, 697716, 775240, 872145, 1046574, 1162860, 1395432, 1744290, 2093148, 2325720, 2616435, 3488580, 4186296, 5232870, 6977160, 10465740, 20931480]

約数ペア:

[(1, 20931480), (2, 10465740), (3, 6977160), (4, 5232870), (5, 4186296), (6, 3488580), (8, 2616435), (9, 2325720), (10, 2093148), (12, 1744290), (15, 1395432), (18, 1162860), (20, 1046574), (24, 872145), (27, 775240), (30, 697716), (36, 581430), (40, 523287), (45, 465144), (54, 387620), (60, 348858), (72, 290715), (90, 232572), (108, 193810), (120, 174429), (135, 155048), (180, 116286), (216, 96905), (270, 77524), (360, 58143), (540, 38762), (1080, 19381)]