21179984

素因数分解:

$2^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{269}}^1$

素因数の和:340

約数の個数: 80

約数和(自身を含む): 50889600

約数和(自身を除く): 29709616

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 37, 38, 56, 74, 76, 112, 133, 148, 152, 259, 266, 269, 296, 304, 518, 532, 538, 592, 703, 1036, 1064, 1076, 1406, 1883, 2072, 2128, 2152, 2812, 3766, 4144, 4304, 4921, 5111, 5624, 7532, 9842, 9953, 10222, 11248, 15064, 19684, 19906, 20444, 30128, 35777, 39368, 39812, 40888, 69671, 71554, 78736, 79624, 81776, 139342, 143108, 159248, 189107, 278684, 286216, 378214, 557368, 572432, 756428, 1114736, 1323749, 1512856, 2647498, 3025712, 5294996, 10589992, 21179984]

約数ペア:

[(1, 21179984), (2, 10589992), (4, 5294996), (7, 3025712), (8, 2647498), (14, 1512856), (16, 1323749), (19, 1114736), (28, 756428), (37, 572432), (38, 557368), (56, 378214), (74, 286216), (76, 278684), (112, 189107), (133, 159248), (148, 143108), (152, 139342), (259, 81776), (266, 79624), (269, 78736), (296, 71554), (304, 69671), (518, 40888), (532, 39812), (538, 39368), (592, 35777), (703, 30128), (1036, 20444), (1064, 19906), (1076, 19684), (1406, 15064), (1883, 11248), (2072, 10222), (2128, 9953), (2152, 9842), (2812, 7532), (3766, 5624), (4144, 5111), (4304, 4921)]