20895810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{409}}^1$

素因数の和:563

約数の個数: 64

約数和(自身を含む): 54552960

約数和(自身を除く): 33657150

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 131, 195, 262, 390, 393, 409, 655, 786, 818, 1227, 1310, 1703, 1965, 2045, 2454, 3406, 3930, 4090, 5109, 5317, 6135, 8515, 10218, 10634, 12270, 15951, 17030, 25545, 26585, 31902, 51090, 53170, 53579, 79755, 107158, 159510, 160737, 267895, 321474, 535790, 696527, 803685, 1393054, 1607370, 2089581, 3482635, 4179162, 6965270, 10447905, 20895810]

約数ペア:

[(1, 20895810), (2, 10447905), (3, 6965270), (5, 4179162), (6, 3482635), (10, 2089581), (13, 1607370), (15, 1393054), (26, 803685), (30, 696527), (39, 535790), (65, 321474), (78, 267895), (130, 160737), (131, 159510), (195, 107158), (262, 79755), (390, 53579), (393, 53170), (409, 51090), (655, 31902), (786, 26585), (818, 25545), (1227, 17030), (1310, 15951), (1703, 12270), (1965, 10634), (2045, 10218), (2454, 8515), (3406, 6135), (3930, 5317), (4090, 5109)]