21939016

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{61}}^2\times {\mathrm{67}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 46303920

約数和(自身を除く): 24364904

約数列:

[1, 2, 4, 8, 11, 22, 44, 61, 67, 88, 122, 134, 244, 268, 488, 536, 671, 737, 1342, 1474, 2684, 2948, 3721, 4087, 5368, 5896, 7442, 8174, 14884, 16348, 29768, 32696, 40931, 44957, 81862, 89914, 163724, 179828, 249307, 327448, 359656, 498614, 997228, 1994456, 2742377, 5484754, 10969508, 21939016]

約数ペア:

[(1, 21939016), (2, 10969508), (4, 5484754), (8, 2742377), (11, 1994456), (22, 997228), (44, 498614), (61, 359656), (67, 327448), (88, 249307), (122, 179828), (134, 163724), (244, 89914), (268, 81862), (488, 44957), (536, 40931), (671, 32696), (737, 29768), (1342, 16348), (1474, 14884), (2684, 8174), (2948, 7442), (3721, 5896), (4087, 5368)]