21918645

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{467}}^1$

素因数の和:634

約数の個数: 48

約数和(自身を含む): 43804800

約数和(自身を除く): 21886155

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 149, 315, 447, 467, 745, 1043, 1341, 1401, 2235, 2335, 3129, 3269, 4203, 5215, 6705, 7005, 9387, 9807, 15645, 16345, 21015, 29421, 46935, 49035, 69583, 147105, 208749, 347915, 487081, 626247, 1043745, 1461243, 2435405, 3131235, 4383729, 7306215, 21918645]

約数ペア:

[(1, 21918645), (3, 7306215), (5, 4383729), (7, 3131235), (9, 2435405), (15, 1461243), (21, 1043745), (35, 626247), (45, 487081), (63, 347915), (105, 208749), (149, 147105), (315, 69583), (447, 49035), (467, 46935), (745, 29421), (1043, 21015), (1341, 16345), (1401, 15645), (2235, 9807), (2335, 9387), (3129, 7005), (3269, 6705), (4203, 5215)]