21205492

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^3\times {\mathrm{569}}^1$

素因数の和:613

約数の個数: 48

約数和(自身を含む): 46730880

約数和(自身を除く): 25525388

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 121, 154, 242, 308, 484, 569, 847, 1138, 1331, 1694, 2276, 2662, 3388, 3983, 5324, 6259, 7966, 9317, 12518, 15932, 18634, 25036, 37268, 43813, 68849, 87626, 137698, 175252, 275396, 481943, 757339, 963886, 1514678, 1927772, 3029356, 5301373, 10602746, 21205492]

約数ペア:

[(1, 21205492), (2, 10602746), (4, 5301373), (7, 3029356), (11, 1927772), (14, 1514678), (22, 963886), (28, 757339), (44, 481943), (77, 275396), (121, 175252), (154, 137698), (242, 87626), (308, 68849), (484, 43813), (569, 37268), (847, 25036), (1138, 18634), (1331, 15932), (1694, 12518), (2276, 9317), (2662, 7966), (3388, 6259), (3983, 5324)]