21491085

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{809}}^1$

素因数の和:858

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 23298675

約数列:

[1, 3, 5, 7, 11, 15, 21, 23, 33, 35, 55, 69, 77, 105, 115, 161, 165, 231, 253, 345, 385, 483, 759, 805, 809, 1155, 1265, 1771, 2415, 2427, 3795, 4045, 5313, 5663, 8855, 8899, 12135, 16989, 18607, 26565, 26697, 28315, 44495, 55821, 62293, 84945, 93035, 130249, 133485, 186879, 204677, 279105, 311465, 390747, 614031, 651245, 934395, 1023385, 1432739, 1953735, 3070155, 4298217, 7163695, 21491085]

約数ペア:

[(1, 21491085), (3, 7163695), (5, 4298217), (7, 3070155), (11, 1953735), (15, 1432739), (21, 1023385), (23, 934395), (33, 651245), (35, 614031), (55, 390747), (69, 311465), (77, 279105), (105, 204677), (115, 186879), (161, 133485), (165, 130249), (231, 93035), (253, 84945), (345, 62293), (385, 55821), (483, 44495), (759, 28315), (805, 26697), (809, 26565), (1155, 18607), (1265, 16989), (1771, 12135), (2415, 8899), (2427, 8855), (3795, 5663), (4045, 5313)]