21526880

素因数分解:

$2^5\times 5^1\times {\mathrm{83}}^1\times {\mathrm{1621}}^1$

素因数の和:1719

約数の個数: 48

約数和(自身を含む): 51501744

約数和(自身を除く): 29974864

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 83, 160, 166, 332, 415, 664, 830, 1328, 1621, 1660, 2656, 3242, 3320, 6484, 6640, 8105, 12968, 13280, 16210, 25936, 32420, 51872, 64840, 129680, 134543, 259360, 269086, 538172, 672715, 1076344, 1345430, 2152688, 2690860, 4305376, 5381720, 10763440, 21526880]

約数ペア:

[(1, 21526880), (2, 10763440), (4, 5381720), (5, 4305376), (8, 2690860), (10, 2152688), (16, 1345430), (20, 1076344), (32, 672715), (40, 538172), (80, 269086), (83, 259360), (160, 134543), (166, 129680), (332, 64840), (415, 51872), (664, 32420), (830, 25936), (1328, 16210), (1621, 13280), (1660, 12968), (2656, 8105), (3242, 6640), (3320, 6484)]