2390540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 5443200

約数和(自身を除く): 3052660

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 79, 85, 89, 158, 170, 178, 316, 340, 356, 395, 445, 790, 890, 1343, 1513, 1580, 1780, 2686, 3026, 5372, 6052, 6715, 7031, 7565, 13430, 14062, 15130, 26860, 28124, 30260, 35155, 70310, 119527, 140620, 239054, 478108, 597635, 1195270, 2390540]

約数ペア:

[(1, 2390540), (2, 1195270), (4, 597635), (5, 478108), (10, 239054), (17, 140620), (20, 119527), (34, 70310), (68, 35155), (79, 30260), (85, 28124), (89, 26860), (158, 15130), (170, 14062), (178, 13430), (316, 7565), (340, 7031), (356, 6715), (395, 6052), (445, 5372), (790, 3026), (890, 2686), (1343, 1780), (1513, 1580)]