21786690

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{42719}}^1$

素因数の和:42746

約数の個数: 32

約数和(自身を含む): 55365120

約数和(自身を除く): 33578430

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 510, 42719, 85438, 128157, 213595, 256314, 427190, 640785, 726223, 1281570, 1452446, 2178669, 3631115, 4357338, 7262230, 10893345, 21786690]

約数ペア:

[(1, 21786690), (2, 10893345), (3, 7262230), (5, 4357338), (6, 3631115), (10, 2178669), (15, 1452446), (17, 1281570), (30, 726223), (34, 640785), (51, 427190), (85, 256314), (102, 213595), (170, 128157), (255, 85438), (510, 42719)]