20238724

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{563}}^1$

素因数の和:640

約数の個数: 48

約数和(自身を含む): 41690880

約数和(自身を除く): 21452156

約数列:

[1, 2, 4, 11, 19, 22, 38, 43, 44, 76, 86, 172, 209, 418, 473, 563, 817, 836, 946, 1126, 1634, 1892, 2252, 3268, 6193, 8987, 10697, 12386, 17974, 21394, 24209, 24772, 35948, 42788, 48418, 96836, 117667, 235334, 266299, 459971, 470668, 532598, 919942, 1065196, 1839884, 5059681, 10119362, 20238724]

約数ペア:

[(1, 20238724), (2, 10119362), (4, 5059681), (11, 1839884), (19, 1065196), (22, 919942), (38, 532598), (43, 470668), (44, 459971), (76, 266299), (86, 235334), (172, 117667), (209, 96836), (418, 48418), (473, 42788), (563, 35948), (817, 24772), (836, 24209), (946, 21394), (1126, 17974), (1634, 12386), (1892, 10697), (2252, 8987), (3268, 6193)]