21133816

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:236

約数の個数: 64

約数和(自身を含む): 45711360

約数和(自身を除く): 24577544

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 61, 62, 88, 122, 124, 127, 244, 248, 254, 341, 488, 508, 671, 682, 1016, 1342, 1364, 1397, 1891, 2684, 2728, 2794, 3782, 3937, 5368, 5588, 7564, 7747, 7874, 11176, 15128, 15494, 15748, 20801, 30988, 31496, 41602, 43307, 61976, 83204, 85217, 86614, 166408, 170434, 173228, 240157, 340868, 346456, 480314, 681736, 960628, 1921256, 2641727, 5283454, 10566908, 21133816]

約数ペア:

[(1, 21133816), (2, 10566908), (4, 5283454), (8, 2641727), (11, 1921256), (22, 960628), (31, 681736), (44, 480314), (61, 346456), (62, 340868), (88, 240157), (122, 173228), (124, 170434), (127, 166408), (244, 86614), (248, 85217), (254, 83204), (341, 61976), (488, 43307), (508, 41602), (671, 31496), (682, 30988), (1016, 20801), (1342, 15748), (1364, 15494), (1397, 15128), (1891, 11176), (2684, 7874), (2728, 7747), (2794, 7564), (3782, 5588), (3937, 5368)]