777780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1$

素因数の和:193

約数の個数: 72

約数和(自身を含む): 2457000

約数和(自身を除く): 1679220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 149, 174, 180, 261, 290, 298, 348, 435, 447, 522, 580, 596, 745, 870, 894, 1044, 1305, 1341, 1490, 1740, 1788, 2235, 2610, 2682, 2980, 4321, 4470, 5220, 5364, 6705, 8642, 8940, 12963, 13410, 17284, 21605, 25926, 26820, 38889, 43210, 51852, 64815, 77778, 86420, 129630, 155556, 194445, 259260, 388890, 777780]

約数ペア:

[(1, 777780), (2, 388890), (3, 259260), (4, 194445), (5, 155556), (6, 129630), (9, 86420), (10, 77778), (12, 64815), (15, 51852), (18, 43210), (20, 38889), (29, 26820), (30, 25926), (36, 21605), (45, 17284), (58, 13410), (60, 12963), (87, 8940), (90, 8642), (116, 6705), (145, 5364), (149, 5220), (174, 4470), (180, 4321), (261, 2980), (290, 2682), (298, 2610), (348, 2235), (435, 1788), (447, 1740), (522, 1490), (580, 1341), (596, 1305), (745, 1044), (870, 894)]