285740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 743232

約数和(自身を除く): 457492

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 157, 182, 260, 314, 364, 455, 628, 785, 910, 1099, 1570, 1820, 2041, 2198, 3140, 4082, 4396, 5495, 8164, 10205, 10990, 14287, 20410, 21980, 28574, 40820, 57148, 71435, 142870, 285740]

約数ペア:

[(1, 285740), (2, 142870), (4, 71435), (5, 57148), (7, 40820), (10, 28574), (13, 21980), (14, 20410), (20, 14287), (26, 10990), (28, 10205), (35, 8164), (52, 5495), (65, 4396), (70, 4082), (91, 3140), (130, 2198), (140, 2041), (157, 1820), (182, 1570), (260, 1099), (314, 910), (364, 785), (455, 628)]