21736720

素因数分解:

$2^4\times 5^1\times {\mathrm{167}}^1\times {\mathrm{1627}}^1$

素因数の和:1807

約数の個数: 40

約数和(自身を含む): 50871744

約数和(自身を除く): 29135024

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 167, 334, 668, 835, 1336, 1627, 1670, 2672, 3254, 3340, 6508, 6680, 8135, 13016, 13360, 16270, 26032, 32540, 65080, 130160, 271709, 543418, 1086836, 1358545, 2173672, 2717090, 4347344, 5434180, 10868360, 21736720]

約数ペア:

[(1, 21736720), (2, 10868360), (4, 5434180), (5, 4347344), (8, 2717090), (10, 2173672), (16, 1358545), (20, 1086836), (40, 543418), (80, 271709), (167, 130160), (334, 65080), (668, 32540), (835, 26032), (1336, 16270), (1627, 13360), (1670, 13016), (2672, 8135), (3254, 6680), (3340, 6508)]