21513780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{2543}}^1$

素因数の和:2605

約数の個数: 72

約数和(自身を含む): 66673152

約数和(自身を除く): 45159372

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 47, 60, 90, 94, 141, 180, 188, 235, 282, 423, 470, 564, 705, 846, 940, 1410, 1692, 2115, 2543, 2820, 4230, 5086, 7629, 8460, 10172, 12715, 15258, 22887, 25430, 30516, 38145, 45774, 50860, 76290, 91548, 114435, 119521, 152580, 228870, 239042, 358563, 457740, 478084, 597605, 717126, 1075689, 1195210, 1434252, 1792815, 2151378, 2390420, 3585630, 4302756, 5378445, 7171260, 10756890, 21513780]

約数ペア:

[(1, 21513780), (2, 10756890), (3, 7171260), (4, 5378445), (5, 4302756), (6, 3585630), (9, 2390420), (10, 2151378), (12, 1792815), (15, 1434252), (18, 1195210), (20, 1075689), (30, 717126), (36, 597605), (45, 478084), (47, 457740), (60, 358563), (90, 239042), (94, 228870), (141, 152580), (180, 119521), (188, 114435), (235, 91548), (282, 76290), (423, 50860), (470, 45774), (564, 38145), (705, 30516), (846, 25430), (940, 22887), (1410, 15258), (1692, 12715), (2115, 10172), (2543, 8460), (2820, 7629), (4230, 5086)]