20408027480

素因数分解:

$2^3\times 5^1\times {\mathrm{1907}}^1\times {\mathrm{267541}}^1$

素因数の和:269459

約数の個数: 32

約数和(自身を含む): 45942312240

約数和(自身を除く): 25534284760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1907, 3814, 7628, 9535, 15256, 19070, 38140, 76280, 267541, 535082, 1070164, 1337705, 2140328, 2675410, 5350820, 10701640, 510200687, 1020401374, 2040802748, 2551003435, 4081605496, 5102006870, 10204013740, 20408027480]

約数ペア:

[(1, 20408027480), (2, 10204013740), (4, 5102006870), (5, 4081605496), (8, 2551003435), (10, 2040802748), (20, 1020401374), (40, 510200687), (1907, 10701640), (3814, 5350820), (7628, 2675410), (9535, 2140328), (15256, 1337705), (19070, 1070164), (38140, 535082), (76280, 267541)]