21880880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{953}}^1$

素因数の和:1014

約数の個数: 80

約数和(自身を含む): 59621184

約数和(自身を除く): 37740304

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 41, 56, 70, 80, 82, 112, 140, 164, 205, 280, 287, 328, 410, 560, 574, 656, 820, 953, 1148, 1435, 1640, 1906, 2296, 2870, 3280, 3812, 4592, 4765, 5740, 6671, 7624, 9530, 11480, 13342, 15248, 19060, 22960, 26684, 33355, 38120, 39073, 53368, 66710, 76240, 78146, 106736, 133420, 156292, 195365, 266840, 273511, 312584, 390730, 533680, 547022, 625168, 781460, 1094044, 1367555, 1562920, 2188088, 2735110, 3125840, 4376176, 5470220, 10940440, 21880880]

約数ペア:

[(1, 21880880), (2, 10940440), (4, 5470220), (5, 4376176), (7, 3125840), (8, 2735110), (10, 2188088), (14, 1562920), (16, 1367555), (20, 1094044), (28, 781460), (35, 625168), (40, 547022), (41, 533680), (56, 390730), (70, 312584), (80, 273511), (82, 266840), (112, 195365), (140, 156292), (164, 133420), (205, 106736), (280, 78146), (287, 76240), (328, 66710), (410, 53368), (560, 39073), (574, 38120), (656, 33355), (820, 26684), (953, 22960), (1148, 19060), (1435, 15248), (1640, 13342), (1906, 11480), (2296, 9530), (2870, 7624), (3280, 6671), (3812, 5740), (4592, 4765)]