18925240

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{113}}^1$

素因数の和:256

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 25397960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 79, 106, 113, 158, 212, 226, 265, 316, 395, 424, 452, 530, 565, 632, 790, 904, 1060, 1130, 1580, 2120, 2260, 3160, 4187, 4520, 5989, 8374, 8927, 11978, 16748, 17854, 20935, 23956, 29945, 33496, 35708, 41870, 44635, 47912, 59890, 71416, 83740, 89270, 119780, 167480, 178540, 239560, 357080, 473131, 946262, 1892524, 2365655, 3785048, 4731310, 9462620, 18925240]

約数ペア:

[(1, 18925240), (2, 9462620), (4, 4731310), (5, 3785048), (8, 2365655), (10, 1892524), (20, 946262), (40, 473131), (53, 357080), (79, 239560), (106, 178540), (113, 167480), (158, 119780), (212, 89270), (226, 83740), (265, 71416), (316, 59890), (395, 47912), (424, 44635), (452, 41870), (530, 35708), (565, 33496), (632, 29945), (790, 23956), (904, 20935), (1060, 17854), (1130, 16748), (1580, 11978), (2120, 8927), (2260, 8374), (3160, 5989), (4187, 4520)]