7890890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{349}}^1$

素因数の和:399

約数の個数: 64

約数和(自身を含む): 18144000

約数和(自身を除く): 10253110

約数列:

[1, 2, 5, 7, 10, 14, 17, 19, 34, 35, 38, 70, 85, 95, 119, 133, 170, 190, 238, 266, 323, 349, 595, 646, 665, 698, 1190, 1330, 1615, 1745, 2261, 2443, 3230, 3490, 4522, 4886, 5933, 6631, 11305, 11866, 12215, 13262, 22610, 24430, 29665, 33155, 41531, 46417, 59330, 66310, 83062, 92834, 112727, 207655, 225454, 232085, 415310, 464170, 563635, 789089, 1127270, 1578178, 3945445, 7890890]

約数ペア:

[(1, 7890890), (2, 3945445), (5, 1578178), (7, 1127270), (10, 789089), (14, 563635), (17, 464170), (19, 415310), (34, 232085), (35, 225454), (38, 207655), (70, 112727), (85, 92834), (95, 83062), (119, 66310), (133, 59330), (170, 46417), (190, 41531), (238, 33155), (266, 29665), (323, 24430), (349, 22610), (595, 13262), (646, 12215), (665, 11866), (698, 11305), (1190, 6631), (1330, 5933), (1615, 4886), (1745, 4522), (2261, 3490), (2443, 3230)]