21319768

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2657}}^1$

素因数の和:2739

約数の個数: 32

約数和(自身を含む): 43059600

約数和(自身を除く): 21739832

約数列:

[1, 2, 4, 8, 17, 34, 59, 68, 118, 136, 236, 472, 1003, 2006, 2657, 4012, 5314, 8024, 10628, 21256, 45169, 90338, 156763, 180676, 313526, 361352, 627052, 1254104, 2664971, 5329942, 10659884, 21319768]

約数ペア:

[(1, 21319768), (2, 10659884), (4, 5329942), (8, 2664971), (17, 1254104), (34, 627052), (59, 361352), (68, 313526), (118, 180676), (136, 156763), (236, 90338), (472, 45169), (1003, 21256), (2006, 10628), (2657, 8024), (4012, 5314)]