21215096

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{157}}^1$

素因数の和:316

約数の個数: 64

約数和(自身を含む): 48537600

約数和(自身を除く): 27322504

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 127, 133, 152, 157, 254, 266, 314, 508, 532, 628, 889, 1016, 1064, 1099, 1256, 1778, 2198, 2413, 2983, 3556, 4396, 4826, 5966, 7112, 8792, 9652, 11932, 16891, 19304, 19939, 20881, 23864, 33782, 39878, 41762, 67564, 79756, 83524, 135128, 139573, 159512, 167048, 279146, 378841, 558292, 757682, 1116584, 1515364, 2651887, 3030728, 5303774, 10607548, 21215096]

約数ペア:

[(1, 21215096), (2, 10607548), (4, 5303774), (7, 3030728), (8, 2651887), (14, 1515364), (19, 1116584), (28, 757682), (38, 558292), (56, 378841), (76, 279146), (127, 167048), (133, 159512), (152, 139573), (157, 135128), (254, 83524), (266, 79756), (314, 67564), (508, 41762), (532, 39878), (628, 33782), (889, 23864), (1016, 20881), (1064, 19939), (1099, 19304), (1256, 16891), (1778, 11932), (2198, 9652), (2413, 8792), (2983, 7112), (3556, 5966), (4396, 4826)]