28393040

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1187}}^1$

素因数の和:1236

約数の個数: 80

約数和(自身を含む): 74245248

約数和(自身を除く): 45852208

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 920, 1040, 1187, 1196, 1495, 1840, 2374, 2392, 2990, 4748, 4784, 5935, 5980, 9496, 11870, 11960, 15431, 18992, 23740, 23920, 27301, 30862, 47480, 54602, 61724, 77155, 94960, 109204, 123448, 136505, 154310, 218408, 246896, 273010, 308620, 354913, 436816, 546020, 617240, 709826, 1092040, 1234480, 1419652, 1774565, 2184080, 2839304, 3549130, 5678608, 7098260, 14196520, 28393040]

約数ペア:

[(1, 28393040), (2, 14196520), (4, 7098260), (5, 5678608), (8, 3549130), (10, 2839304), (13, 2184080), (16, 1774565), (20, 1419652), (23, 1234480), (26, 1092040), (40, 709826), (46, 617240), (52, 546020), (65, 436816), (80, 354913), (92, 308620), (104, 273010), (115, 246896), (130, 218408), (184, 154310), (208, 136505), (230, 123448), (260, 109204), (299, 94960), (368, 77155), (460, 61724), (520, 54602), (598, 47480), (920, 30862), (1040, 27301), (1187, 23920), (1196, 23740), (1495, 18992), (1840, 15431), (2374, 11960), (2392, 11870), (2990, 9496), (4748, 5980), (4784, 5935)]