19664080

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{10687}}^1$

素因数の和:10723

約数の個数: 40

約数和(自身を含む): 47711232

約数和(自身を除く): 28047152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 10687, 21374, 42748, 53435, 85496, 106870, 170992, 213740, 245801, 427480, 491602, 854960, 983204, 1229005, 1966408, 2458010, 3932816, 4916020, 9832040, 19664080]

約数ペア:

[(1, 19664080), (2, 9832040), (4, 4916020), (5, 3932816), (8, 2458010), (10, 1966408), (16, 1229005), (20, 983204), (23, 854960), (40, 491602), (46, 427480), (80, 245801), (92, 213740), (115, 170992), (184, 106870), (230, 85496), (368, 53435), (460, 42748), (920, 21374), (1840, 10687)]