21762068

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{109}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 42134400

約数和(自身を除く): 20372332

約数列:

[1, 2, 4, 19, 37, 38, 71, 74, 76, 109, 142, 148, 218, 284, 436, 703, 1349, 1406, 2071, 2627, 2698, 2812, 4033, 4142, 5254, 5396, 7739, 8066, 8284, 10508, 15478, 16132, 30956, 49913, 76627, 99826, 147041, 153254, 199652, 286343, 294082, 306508, 572686, 588164, 1145372, 5440517, 10881034, 21762068]

約数ペア:

[(1, 21762068), (2, 10881034), (4, 5440517), (19, 1145372), (37, 588164), (38, 572686), (71, 306508), (74, 294082), (76, 286343), (109, 199652), (142, 153254), (148, 147041), (218, 99826), (284, 76627), (436, 49913), (703, 30956), (1349, 16132), (1406, 15478), (2071, 10508), (2627, 8284), (2698, 8066), (2812, 7739), (4033, 5396), (4142, 5254)]