21140512

素因数分解:

$2^5\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 43593984

約数和(自身を除く): 22453472

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 101, 124, 202, 211, 248, 404, 422, 496, 808, 844, 992, 1616, 1688, 3131, 3232, 3376, 6262, 6541, 6752, 12524, 13082, 21311, 25048, 26164, 42622, 50096, 52328, 85244, 100192, 104656, 170488, 209312, 340976, 660641, 681952, 1321282, 2642564, 5285128, 10570256, 21140512]

約数ペア:

[(1, 21140512), (2, 10570256), (4, 5285128), (8, 2642564), (16, 1321282), (31, 681952), (32, 660641), (62, 340976), (101, 209312), (124, 170488), (202, 104656), (211, 100192), (248, 85244), (404, 52328), (422, 50096), (496, 42622), (808, 26164), (844, 25048), (992, 21311), (1616, 13082), (1688, 12524), (3131, 6752), (3232, 6541), (3376, 6262)]