28876890

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{691}}^1$

素因数の和:907

約数の個数: 64

約数和(自身を含む): 79718400

約数和(自身を除く): 50841510

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 199, 210, 398, 597, 691, 995, 1194, 1382, 1393, 1990, 2073, 2786, 2985, 3455, 4146, 4179, 4837, 5970, 6910, 6965, 8358, 9674, 10365, 13930, 14511, 20730, 20895, 24185, 29022, 41790, 48370, 72555, 137509, 145110, 275018, 412527, 687545, 825054, 962563, 1375090, 1925126, 2062635, 2887689, 4125270, 4812815, 5775378, 9625630, 14438445, 28876890]

約数ペア:

[(1, 28876890), (2, 14438445), (3, 9625630), (5, 5775378), (6, 4812815), (7, 4125270), (10, 2887689), (14, 2062635), (15, 1925126), (21, 1375090), (30, 962563), (35, 825054), (42, 687545), (70, 412527), (105, 275018), (199, 145110), (210, 137509), (398, 72555), (597, 48370), (691, 41790), (995, 29022), (1194, 24185), (1382, 20895), (1393, 20730), (1990, 14511), (2073, 13930), (2786, 10365), (2985, 9674), (3455, 8358), (4146, 6965), (4179, 6910), (4837, 5970)]