21254724

素因数分解:

$2^2\times 3^6\times {\mathrm{37}}^1\times {\mathrm{197}}^1$

素因数の和:256

約数の個数: 84

約数和(自身を含む): 57566124

約数和(自身を除く): 36311400

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 37, 54, 74, 81, 108, 111, 148, 162, 197, 222, 243, 324, 333, 394, 444, 486, 591, 666, 729, 788, 972, 999, 1182, 1332, 1458, 1773, 1998, 2364, 2916, 2997, 3546, 3996, 5319, 5994, 7092, 7289, 8991, 10638, 11988, 14578, 15957, 17982, 21276, 21867, 26973, 29156, 31914, 35964, 43734, 47871, 53946, 63828, 65601, 87468, 95742, 107892, 131202, 143613, 191484, 196803, 262404, 287226, 393606, 574452, 590409, 787212, 1180818, 1771227, 2361636, 3542454, 5313681, 7084908, 10627362, 21254724]

約数ペア:

[(1, 21254724), (2, 10627362), (3, 7084908), (4, 5313681), (6, 3542454), (9, 2361636), (12, 1771227), (18, 1180818), (27, 787212), (36, 590409), (37, 574452), (54, 393606), (74, 287226), (81, 262404), (108, 196803), (111, 191484), (148, 143613), (162, 131202), (197, 107892), (222, 95742), (243, 87468), (324, 65601), (333, 63828), (394, 53946), (444, 47871), (486, 43734), (591, 35964), (666, 31914), (729, 29156), (788, 26973), (972, 21867), (999, 21276), (1182, 17982), (1332, 15957), (1458, 14578), (1773, 11988), (1998, 10638), (2364, 8991), (2916, 7289), (2997, 7092), (3546, 5994), (3996, 5319)]