640855712

素因数分解:

$2^5\times 7^4\times {\mathrm{19}}^1\times {\mathrm{439}}^1$

素因数の和:496

約数の個数: 120

約数和(自身を含む): 1552874400

約数和(自身を除く): 912018688

約数列:

[1, 2, 4, 7, 8, 14, 16, 19, 28, 32, 38, 49, 56, 76, 98, 112, 133, 152, 196, 224, 266, 304, 343, 392, 439, 532, 608, 686, 784, 878, 931, 1064, 1372, 1568, 1756, 1862, 2128, 2401, 2744, 3073, 3512, 3724, 4256, 4802, 5488, 6146, 6517, 7024, 7448, 8341, 9604, 10976, 12292, 13034, 14048, 14896, 16682, 19208, 21511, 24584, 26068, 29792, 33364, 38416, 43022, 45619, 49168, 52136, 58387, 66728, 76832, 86044, 91238, 98336, 104272, 116774, 133456, 150577, 172088, 182476, 208544, 233548, 266912, 301154, 344176, 364952, 408709, 467096, 602308, 688352, 729904, 817418, 934192, 1054039, 1204616, 1459808, 1634836, 1868384, 2108078, 2409232, 2860963, 3269672, 4216156, 4818464, 5721926, 6539344, 8432312, 11443852, 13078688, 16864624, 20026741, 22887704, 33729248, 40053482, 45775408, 80106964, 91550816, 160213928, 320427856, 640855712]

約数ペア:

[(1, 640855712), (2, 320427856), (4, 160213928), (7, 91550816), (8, 80106964), (14, 45775408), (16, 40053482), (19, 33729248), (28, 22887704), (32, 20026741), (38, 16864624), (49, 13078688), (56, 11443852), (76, 8432312), (98, 6539344), (112, 5721926), (133, 4818464), (152, 4216156), (196, 3269672), (224, 2860963), (266, 2409232), (304, 2108078), (343, 1868384), (392, 1634836), (439, 1459808), (532, 1204616), (608, 1054039), (686, 934192), (784, 817418), (878, 729904), (931, 688352), (1064, 602308), (1372, 467096), (1568, 408709), (1756, 364952), (1862, 344176), (2128, 301154), (2401, 266912), (2744, 233548), (3073, 208544), (3512, 182476), (3724, 172088), (4256, 150577), (4802, 133456), (5488, 116774), (6146, 104272), (6517, 98336), (7024, 91238), (7448, 86044), (8341, 76832), (9604, 66728), (10976, 58387), (12292, 52136), (13034, 49168), (14048, 45619), (14896, 43022), (16682, 38416), (19208, 33364), (21511, 29792), (24584, 26068)]