21267488

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{1949}}^1$

素因数の和:2001

約数の個数: 48

約数和(自身を含む): 47174400

約数和(自身を除く): 25906912

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 32, 44, 62, 88, 124, 176, 248, 341, 352, 496, 682, 992, 1364, 1949, 2728, 3898, 5456, 7796, 10912, 15592, 21439, 31184, 42878, 60419, 62368, 85756, 120838, 171512, 241676, 343024, 483352, 664609, 686048, 966704, 1329218, 1933408, 2658436, 5316872, 10633744, 21267488]

約数ペア:

[(1, 21267488), (2, 10633744), (4, 5316872), (8, 2658436), (11, 1933408), (16, 1329218), (22, 966704), (31, 686048), (32, 664609), (44, 483352), (62, 343024), (88, 241676), (124, 171512), (176, 120838), (248, 85756), (341, 62368), (352, 60419), (496, 42878), (682, 31184), (992, 21439), (1364, 15592), (1949, 10912), (2728, 7796), (3898, 5456)]