20939856

素因数分解:

$2^4\times 3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{307}}^1$

素因数の和:361

約数の個数: 120

約数和(自身を含む): 65308320

約数和(自身を除く): 44368464

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 29, 42, 48, 49, 56, 58, 84, 87, 98, 112, 116, 147, 168, 174, 196, 203, 232, 294, 307, 336, 348, 392, 406, 464, 588, 609, 614, 696, 784, 812, 921, 1176, 1218, 1228, 1392, 1421, 1624, 1842, 2149, 2352, 2436, 2456, 2842, 3248, 3684, 4263, 4298, 4872, 4912, 5684, 6447, 7368, 8526, 8596, 8903, 9744, 11368, 12894, 14736, 15043, 17052, 17192, 17806, 22736, 25788, 26709, 30086, 34104, 34384, 35612, 45129, 51576, 53418, 60172, 62321, 68208, 71224, 90258, 103152, 106836, 120344, 124642, 142448, 180516, 186963, 213672, 240688, 249284, 361032, 373926, 427344, 436247, 498568, 722064, 747852, 872494, 997136, 1308741, 1495704, 1744988, 2617482, 2991408, 3489976, 5234964, 6979952, 10469928, 20939856]

約数ペア:

[(1, 20939856), (2, 10469928), (3, 6979952), (4, 5234964), (6, 3489976), (7, 2991408), (8, 2617482), (12, 1744988), (14, 1495704), (16, 1308741), (21, 997136), (24, 872494), (28, 747852), (29, 722064), (42, 498568), (48, 436247), (49, 427344), (56, 373926), (58, 361032), (84, 249284), (87, 240688), (98, 213672), (112, 186963), (116, 180516), (147, 142448), (168, 124642), (174, 120344), (196, 106836), (203, 103152), (232, 90258), (294, 71224), (307, 68208), (336, 62321), (348, 60172), (392, 53418), (406, 51576), (464, 45129), (588, 35612), (609, 34384), (614, 34104), (696, 30086), (784, 26709), (812, 25788), (921, 22736), (1176, 17806), (1218, 17192), (1228, 17052), (1392, 15043), (1421, 14736), (1624, 12894), (1842, 11368), (2149, 9744), (2352, 8903), (2436, 8596), (2456, 8526), (2842, 7368), (3248, 6447), (3684, 5684), (4263, 4912), (4298, 4872)]