20958208

素因数分解:

$2^{10}\times {\mathrm{97}}^1\times {\mathrm{211}}^1$

素因数の和:328

約数の個数: 44

約数和(自身を含む): 42528472

約数和(自身を除く): 21570264

約数列:

[1, 2, 4, 8, 16, 32, 64, 97, 128, 194, 211, 256, 388, 422, 512, 776, 844, 1024, 1552, 1688, 3104, 3376, 6208, 6752, 12416, 13504, 20467, 24832, 27008, 40934, 49664, 54016, 81868, 99328, 108032, 163736, 216064, 327472, 654944, 1309888, 2619776, 5239552, 10479104, 20958208]

約数ペア:

[(1, 20958208), (2, 10479104), (4, 5239552), (8, 2619776), (16, 1309888), (32, 654944), (64, 327472), (97, 216064), (128, 163736), (194, 108032), (211, 99328), (256, 81868), (388, 54016), (422, 49664), (512, 40934), (776, 27008), (844, 24832), (1024, 20467), (1552, 13504), (1688, 12416), (3104, 6752), (3376, 6208)]