19828912

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{181}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 39809952

約数和(自身を除く): 19981040

約数列:

[1, 2, 4, 8, 16, 41, 82, 164, 167, 181, 328, 334, 362, 656, 668, 724, 1336, 1448, 2672, 2896, 6847, 7421, 13694, 14842, 27388, 29684, 30227, 54776, 59368, 60454, 109552, 118736, 120908, 241816, 483632, 1239307, 2478614, 4957228, 9914456, 19828912]

約数ペア:

[(1, 19828912), (2, 9914456), (4, 4957228), (8, 2478614), (16, 1239307), (41, 483632), (82, 241816), (164, 120908), (167, 118736), (181, 109552), (328, 60454), (334, 59368), (362, 54776), (656, 30227), (668, 29684), (724, 27388), (1336, 14842), (1448, 13694), (2672, 7421), (2896, 6847)]