28750720

素因数分解:

$2^7\times 5^1\times {\mathrm{167}}^1\times {\mathrm{269}}^1$

素因数の和:455

約数の個数: 64

約数和(自身を含む): 69400800

約数和(自身を除く): 40650080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 167, 269, 320, 334, 538, 640, 668, 835, 1076, 1336, 1345, 1670, 2152, 2672, 2690, 3340, 4304, 5344, 5380, 6680, 8608, 10688, 10760, 13360, 17216, 21376, 21520, 26720, 34432, 43040, 44923, 53440, 86080, 89846, 106880, 172160, 179692, 224615, 359384, 449230, 718768, 898460, 1437536, 1796920, 2875072, 3593840, 5750144, 7187680, 14375360, 28750720]

約数ペア:

[(1, 28750720), (2, 14375360), (4, 7187680), (5, 5750144), (8, 3593840), (10, 2875072), (16, 1796920), (20, 1437536), (32, 898460), (40, 718768), (64, 449230), (80, 359384), (128, 224615), (160, 179692), (167, 172160), (269, 106880), (320, 89846), (334, 86080), (538, 53440), (640, 44923), (668, 43040), (835, 34432), (1076, 26720), (1336, 21520), (1345, 21376), (1670, 17216), (2152, 13360), (2672, 10760), (2690, 10688), (3340, 8608), (4304, 6680), (5344, 5380)]