31912060

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1997}}^1$

素因数の和:2070

約数の個数: 48

約数和(自身を含む): 72503424

約数和(自身を除く): 40591364

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 47, 68, 85, 94, 170, 188, 235, 340, 470, 799, 940, 1598, 1997, 3196, 3994, 3995, 7988, 7990, 9985, 15980, 19970, 33949, 39940, 67898, 93859, 135796, 169745, 187718, 339490, 375436, 469295, 678980, 938590, 1595603, 1877180, 3191206, 6382412, 7978015, 15956030, 31912060]

約数ペア:

[(1, 31912060), (2, 15956030), (4, 7978015), (5, 6382412), (10, 3191206), (17, 1877180), (20, 1595603), (34, 938590), (47, 678980), (68, 469295), (85, 375436), (94, 339490), (170, 187718), (188, 169745), (235, 135796), (340, 93859), (470, 67898), (799, 39940), (940, 33949), (1598, 19970), (1997, 15980), (3196, 9985), (3994, 7990), (3995, 7988)]