18147020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 39644640

約数和(自身を除く): 21497620

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 137, 148, 179, 185, 274, 358, 370, 548, 685, 716, 740, 895, 1370, 1790, 2740, 3580, 5069, 6623, 10138, 13246, 20276, 24523, 25345, 26492, 33115, 49046, 50690, 66230, 98092, 101380, 122615, 132460, 245230, 490460, 907351, 1814702, 3629404, 4536755, 9073510, 18147020]

約数ペア:

[(1, 18147020), (2, 9073510), (4, 4536755), (5, 3629404), (10, 1814702), (20, 907351), (37, 490460), (74, 245230), (137, 132460), (148, 122615), (179, 101380), (185, 98092), (274, 66230), (358, 50690), (370, 49046), (548, 33115), (685, 26492), (716, 25345), (740, 24523), (895, 20276), (1370, 13246), (1790, 10138), (2740, 6623), (3580, 5069)]