20891063680

素因数分解:

$2^7\times 5^1\times {\mathrm{31}}^2\times {\mathrm{33967}}^1$

素因数の和:34048

約数の個数: 96

約数和(自身を含む): 51607242720

約数和(自身を除く): 30716179040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 310, 320, 496, 620, 640, 961, 992, 1240, 1922, 1984, 2480, 3844, 3968, 4805, 4960, 7688, 9610, 9920, 15376, 19220, 19840, 30752, 33967, 38440, 61504, 67934, 76880, 123008, 135868, 153760, 169835, 271736, 307520, 339670, 543472, 615040, 679340, 1052977, 1086944, 1358680, 2105954, 2173888, 2717360, 4211908, 4347776, 5264885, 5434720, 8423816, 10529770, 10869440, 16847632, 21059540, 21738880, 32642287, 33695264, 42119080, 65284574, 67390528, 84238160, 130569148, 134781056, 163211435, 168476320, 261138296, 326422870, 336952640, 522276592, 652845740, 673905280, 1044553184, 1305691480, 2089106368, 2611382960, 4178212736, 5222765920, 10445531840, 20891063680]

約数ペア:

[(1, 20891063680), (2, 10445531840), (4, 5222765920), (5, 4178212736), (8, 2611382960), (10, 2089106368), (16, 1305691480), (20, 1044553184), (31, 673905280), (32, 652845740), (40, 522276592), (62, 336952640), (64, 326422870), (80, 261138296), (124, 168476320), (128, 163211435), (155, 134781056), (160, 130569148), (248, 84238160), (310, 67390528), (320, 65284574), (496, 42119080), (620, 33695264), (640, 32642287), (961, 21738880), (992, 21059540), (1240, 16847632), (1922, 10869440), (1984, 10529770), (2480, 8423816), (3844, 5434720), (3968, 5264885), (4805, 4347776), (4960, 4211908), (7688, 2717360), (9610, 2173888), (9920, 2105954), (15376, 1358680), (19220, 1086944), (19840, 1052977), (30752, 679340), (33967, 615040), (38440, 543472), (61504, 339670), (67934, 307520), (76880, 271736), (123008, 169835), (135868, 153760)]