81013380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{192889}}^1$

素因数の和:192908

約数の個数: 48

約数和(自身を含む): 259244160

約数和(自身を除く): 178230780

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 192889, 385778, 578667, 771556, 964445, 1157334, 1350223, 1928890, 2314668, 2700446, 2893335, 3857780, 4050669, 5400892, 5786670, 6751115, 8101338, 11573340, 13502230, 16202676, 20253345, 27004460, 40506690, 81013380]

約数ペア:

[(1, 81013380), (2, 40506690), (3, 27004460), (4, 20253345), (5, 16202676), (6, 13502230), (7, 11573340), (10, 8101338), (12, 6751115), (14, 5786670), (15, 5400892), (20, 4050669), (21, 3857780), (28, 2893335), (30, 2700446), (35, 2314668), (42, 1928890), (60, 1350223), (70, 1157334), (84, 964445), (105, 771556), (140, 578667), (210, 385778), (420, 192889)]