20989824

素因数分解:

$2^7\times 3^1\times {\mathrm{47}}^1\times {\mathrm{1163}}^1$

素因数の和:1227

約数の個数: 64

約数和(自身を含む): 56989440

約数和(自身を除く): 35999616

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 47, 48, 64, 94, 96, 128, 141, 188, 192, 282, 376, 384, 564, 752, 1128, 1163, 1504, 2256, 2326, 3008, 3489, 4512, 4652, 6016, 6978, 9024, 9304, 13956, 18048, 18608, 27912, 37216, 54661, 55824, 74432, 109322, 111648, 148864, 163983, 218644, 223296, 327966, 437288, 446592, 655932, 874576, 1311864, 1749152, 2623728, 3498304, 5247456, 6996608, 10494912, 20989824]

約数ペア:

[(1, 20989824), (2, 10494912), (3, 6996608), (4, 5247456), (6, 3498304), (8, 2623728), (12, 1749152), (16, 1311864), (24, 874576), (32, 655932), (47, 446592), (48, 437288), (64, 327966), (94, 223296), (96, 218644), (128, 163983), (141, 148864), (188, 111648), (192, 109322), (282, 74432), (376, 55824), (384, 54661), (564, 37216), (752, 27912), (1128, 18608), (1163, 18048), (1504, 13956), (2256, 9304), (2326, 9024), (3008, 6978), (3489, 6016), (4512, 4652)]