18930620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{127}}^1\times {\mathrm{257}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 41610240

約数和(自身を除く): 22679620

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 127, 145, 254, 257, 290, 508, 514, 580, 635, 1028, 1270, 1285, 2540, 2570, 3683, 5140, 7366, 7453, 14732, 14906, 18415, 29812, 32639, 36830, 37265, 65278, 73660, 74530, 130556, 149060, 163195, 326390, 652780, 946531, 1893062, 3786124, 4732655, 9465310, 18930620]

約数ペア:

[(1, 18930620), (2, 9465310), (4, 4732655), (5, 3786124), (10, 1893062), (20, 946531), (29, 652780), (58, 326390), (116, 163195), (127, 149060), (145, 130556), (254, 74530), (257, 73660), (290, 65278), (508, 37265), (514, 36830), (580, 32639), (635, 29812), (1028, 18415), (1270, 14906), (1285, 14732), (2540, 7453), (2570, 7366), (3683, 5140)]