2650640

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1949}}^1$

素因数の和:1979

約数の個数: 40

約数和(自身を含む): 6528600

約数和(自身を除く): 3877960

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 1949, 3898, 7796, 9745, 15592, 19490, 31184, 33133, 38980, 66266, 77960, 132532, 155920, 165665, 265064, 331330, 530128, 662660, 1325320, 2650640]

約数ペア:

[(1, 2650640), (2, 1325320), (4, 662660), (5, 530128), (8, 331330), (10, 265064), (16, 165665), (17, 155920), (20, 132532), (34, 77960), (40, 66266), (68, 38980), (80, 33133), (85, 31184), (136, 19490), (170, 15592), (272, 9745), (340, 7796), (680, 3898), (1360, 1949)]