19180924

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 39916800

約数和(自身を除く): 20735876

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 89, 172, 178, 179, 301, 356, 358, 602, 623, 716, 1204, 1246, 1253, 2492, 2506, 3827, 5012, 7654, 7697, 15308, 15394, 15931, 26789, 30788, 31862, 53578, 53879, 63724, 107156, 107758, 111517, 215516, 223034, 446068, 685033, 1370066, 2740132, 4795231, 9590462, 19180924]

約数ペア:

[(1, 19180924), (2, 9590462), (4, 4795231), (7, 2740132), (14, 1370066), (28, 685033), (43, 446068), (86, 223034), (89, 215516), (172, 111517), (178, 107758), (179, 107156), (301, 63724), (356, 53879), (358, 53578), (602, 31862), (623, 30788), (716, 26789), (1204, 15931), (1246, 15394), (1253, 15308), (2492, 7697), (2506, 7654), (3827, 5012)]