21856164

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^2\times {\mathrm{313}}^1$

素因数の和:377

約数の個数: 72

約数和(自身を含む): 58343712

約数和(自身を除く): 36487548

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 23, 33, 44, 46, 66, 69, 92, 132, 138, 253, 276, 313, 506, 529, 626, 759, 939, 1012, 1058, 1252, 1518, 1587, 1878, 2116, 3036, 3174, 3443, 3756, 5819, 6348, 6886, 7199, 10329, 11638, 13772, 14398, 17457, 20658, 21597, 23276, 28796, 34914, 41316, 43194, 69828, 79189, 86388, 158378, 165577, 237567, 316756, 331154, 475134, 496731, 662308, 950268, 993462, 1821347, 1986924, 3642694, 5464041, 7285388, 10928082, 21856164]

約数ペア:

[(1, 21856164), (2, 10928082), (3, 7285388), (4, 5464041), (6, 3642694), (11, 1986924), (12, 1821347), (22, 993462), (23, 950268), (33, 662308), (44, 496731), (46, 475134), (66, 331154), (69, 316756), (92, 237567), (132, 165577), (138, 158378), (253, 86388), (276, 79189), (313, 69828), (506, 43194), (529, 41316), (626, 34914), (759, 28796), (939, 23276), (1012, 21597), (1058, 20658), (1252, 17457), (1518, 14398), (1587, 13772), (1878, 11638), (2116, 10329), (3036, 7199), (3174, 6886), (3443, 6348), (3756, 5819)]