21688120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{28537}}^1$

素因数の和:28567

約数の個数: 32

約数和(自身を含む): 51368400

約数和(自身を除く): 29680280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 28537, 57074, 114148, 142685, 228296, 285370, 542203, 570740, 1084406, 1141480, 2168812, 2711015, 4337624, 5422030, 10844060, 21688120]

約数ペア:

[(1, 21688120), (2, 10844060), (4, 5422030), (5, 4337624), (8, 2711015), (10, 2168812), (19, 1141480), (20, 1084406), (38, 570740), (40, 542203), (76, 285370), (95, 228296), (152, 142685), (190, 114148), (380, 57074), (760, 28537)]