19858965

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 37920960

約数和(自身を除く): 18061995

約数列:

[1, 3, 5, 7, 15, 21, 35, 41, 49, 105, 123, 147, 205, 245, 287, 615, 659, 735, 861, 1435, 1977, 2009, 3295, 4305, 4613, 6027, 9885, 10045, 13839, 23065, 27019, 30135, 32291, 69195, 81057, 96873, 135095, 161455, 189133, 405285, 484365, 567399, 945665, 1323931, 2836995, 3971793, 6619655, 19858965]

約数ペア:

[(1, 19858965), (3, 6619655), (5, 3971793), (7, 2836995), (15, 1323931), (21, 945665), (35, 567399), (41, 484365), (49, 405285), (105, 189133), (123, 161455), (147, 135095), (205, 96873), (245, 81057), (287, 69195), (615, 32291), (659, 30135), (735, 27019), (861, 23065), (1435, 13839), (1977, 10045), (2009, 9885), (3295, 6027), (4305, 4613)]