681570393

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{307}}^1\times {\mathrm{1489}}^1$

素因数の和:1877

約数の個数: 32

約数和(自身を含む): 1057351680

約数和(自身を除く): 375781287

約数列:

[1, 3, 7, 21, 71, 213, 307, 497, 921, 1489, 1491, 2149, 4467, 6447, 10423, 21797, 31269, 65391, 105719, 152579, 317157, 457123, 457737, 740033, 1371369, 2220099, 3199861, 9599583, 32455733, 97367199, 227190131, 681570393]

約数ペア:

[(1, 681570393), (3, 227190131), (7, 97367199), (21, 32455733), (71, 9599583), (213, 3199861), (307, 2220099), (497, 1371369), (921, 740033), (1489, 457737), (1491, 457123), (2149, 317157), (4467, 152579), (6447, 105719), (10423, 65391), (21797, 31269)]