21062320

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{911}}^1$

素因数の和:958

約数の個数: 60

約数和(自身を含む): 52077024

約数和(自身を除く): 31014704

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 911, 1156, 1360, 1445, 1822, 2312, 2890, 3644, 4555, 4624, 5780, 7288, 9110, 11560, 14576, 15487, 18220, 23120, 30974, 36440, 61948, 72880, 77435, 123896, 154870, 247792, 263279, 309740, 526558, 619480, 1053116, 1238960, 1316395, 2106232, 2632790, 4212464, 5265580, 10531160, 21062320]

約数ペア:

[(1, 21062320), (2, 10531160), (4, 5265580), (5, 4212464), (8, 2632790), (10, 2106232), (16, 1316395), (17, 1238960), (20, 1053116), (34, 619480), (40, 526558), (68, 309740), (80, 263279), (85, 247792), (136, 154870), (170, 123896), (272, 77435), (289, 72880), (340, 61948), (578, 36440), (680, 30974), (911, 23120), (1156, 18220), (1360, 15487), (1445, 14576), (1822, 11560), (2312, 9110), (2890, 7288), (3644, 5780), (4555, 4624)]