397740

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{947}}^1$

素因数の和:966

約数の個数: 48

約数和(自身を含む): 1274112

約数和(自身を除く): 876372

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 947, 1894, 2841, 3788, 4735, 5682, 6629, 9470, 11364, 13258, 14205, 18940, 19887, 26516, 28410, 33145, 39774, 56820, 66290, 79548, 99435, 132580, 198870, 397740]

約数ペア:

[(1, 397740), (2, 198870), (3, 132580), (4, 99435), (5, 79548), (6, 66290), (7, 56820), (10, 39774), (12, 33145), (14, 28410), (15, 26516), (20, 19887), (21, 18940), (28, 14205), (30, 13258), (35, 11364), (42, 9470), (60, 6629), (70, 5682), (84, 4735), (105, 3788), (140, 2841), (210, 1894), (420, 947)]