28918715

素因数分解:

$5^1\times 7^1\times {\mathrm{641}}^1\times {\mathrm{1289}}^1$

素因数の和:1942

約数の個数: 16

約数和(自身を含む): 39752640

約数和(自身を除く): 10833925

約数列:

[1, 5, 7, 35, 641, 1289, 3205, 4487, 6445, 9023, 22435, 45115, 826249, 4131245, 5783743, 28918715]

約数ペア:

[(1, 28918715), (5, 5783743), (7, 4131245), (35, 826249), (641, 45115), (1289, 22435), (3205, 9023), (4487, 6445)]