4206140

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1$

素因数の和:254

約数の個数: 48

約数和(自身を含む): 9525600

約数和(自身を除く): 5319460

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 89, 139, 170, 178, 278, 340, 356, 445, 556, 695, 890, 1390, 1513, 1780, 2363, 2780, 3026, 4726, 6052, 7565, 9452, 11815, 12371, 15130, 23630, 24742, 30260, 47260, 49484, 61855, 123710, 210307, 247420, 420614, 841228, 1051535, 2103070, 4206140]

約数ペア:

[(1, 4206140), (2, 2103070), (4, 1051535), (5, 841228), (10, 420614), (17, 247420), (20, 210307), (34, 123710), (68, 61855), (85, 49484), (89, 47260), (139, 30260), (170, 24742), (178, 23630), (278, 15130), (340, 12371), (356, 11815), (445, 9452), (556, 7565), (695, 6052), (890, 4726), (1390, 3026), (1513, 2780), (1780, 2363)]