18213280

素因数分解:

$2^5\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1699}}^1$

素因数の和:1781

約数の個数: 48

約数和(自身を含む): 43696800

約数和(自身を除く): 25483520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 67, 80, 134, 160, 268, 335, 536, 670, 1072, 1340, 1699, 2144, 2680, 3398, 5360, 6796, 8495, 10720, 13592, 16990, 27184, 33980, 54368, 67960, 113833, 135920, 227666, 271840, 455332, 569165, 910664, 1138330, 1821328, 2276660, 3642656, 4553320, 9106640, 18213280]

約数ペア:

[(1, 18213280), (2, 9106640), (4, 4553320), (5, 3642656), (8, 2276660), (10, 1821328), (16, 1138330), (20, 910664), (32, 569165), (40, 455332), (67, 271840), (80, 227666), (134, 135920), (160, 113833), (268, 67960), (335, 54368), (536, 33980), (670, 27184), (1072, 16990), (1340, 13592), (1699, 10720), (2144, 8495), (2680, 6796), (3398, 5360)]