205819340

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{4621}}^1$

素因数の和:4778

約数の個数: 48

約数和(自身を含む): 461238624

約数和(自身を除く): 255419284

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 131, 170, 262, 340, 524, 655, 1310, 2227, 2620, 4454, 4621, 8908, 9242, 11135, 18484, 22270, 23105, 44540, 46210, 78557, 92420, 157114, 314228, 392785, 605351, 785570, 1210702, 1571140, 2421404, 3026755, 6053510, 10290967, 12107020, 20581934, 41163868, 51454835, 102909670, 205819340]

約数ペア:

[(1, 205819340), (2, 102909670), (4, 51454835), (5, 41163868), (10, 20581934), (17, 12107020), (20, 10290967), (34, 6053510), (68, 3026755), (85, 2421404), (131, 1571140), (170, 1210702), (262, 785570), (340, 605351), (524, 392785), (655, 314228), (1310, 157114), (2227, 92420), (2620, 78557), (4454, 46210), (4621, 44540), (8908, 23105), (9242, 22270), (11135, 18484)]