68518660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{503}}^1$

素因数の和:665

約数の個数: 72

約数和(自身を含む): 168920640

約数和(自身を除く): 100401980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 196, 245, 278, 490, 503, 556, 695, 973, 980, 1006, 1390, 1946, 2012, 2515, 2780, 3521, 3892, 4865, 5030, 6811, 7042, 9730, 10060, 13622, 14084, 17605, 19460, 24647, 27244, 34055, 35210, 49294, 68110, 69917, 70420, 98588, 123235, 136220, 139834, 246470, 279668, 349585, 489419, 492940, 699170, 978838, 1398340, 1957676, 2447095, 3425933, 4894190, 6851866, 9788380, 13703732, 17129665, 34259330, 68518660]

約数ペア:

[(1, 68518660), (2, 34259330), (4, 17129665), (5, 13703732), (7, 9788380), (10, 6851866), (14, 4894190), (20, 3425933), (28, 2447095), (35, 1957676), (49, 1398340), (70, 978838), (98, 699170), (139, 492940), (140, 489419), (196, 349585), (245, 279668), (278, 246470), (490, 139834), (503, 136220), (556, 123235), (695, 98588), (973, 70420), (980, 69917), (1006, 68110), (1390, 49294), (1946, 35210), (2012, 34055), (2515, 27244), (2780, 24647), (3521, 19460), (3892, 17605), (4865, 14084), (5030, 13622), (6811, 10060), (7042, 9730)]