81312756

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{61}}^1\times {\mathrm{2267}}^1$

素因数の和:2349

約数の個数: 72

約数和(自身を含む): 224423136

約数和(自身を除く): 143110380

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 49, 61, 84, 98, 122, 147, 183, 196, 244, 294, 366, 427, 588, 732, 854, 1281, 1708, 2267, 2562, 2989, 4534, 5124, 5978, 6801, 8967, 9068, 11956, 13602, 15869, 17934, 27204, 31738, 35868, 47607, 63476, 95214, 111083, 138287, 190428, 222166, 276574, 333249, 414861, 444332, 553148, 666498, 829722, 968009, 1332996, 1659444, 1936018, 2904027, 3872036, 5808054, 6776063, 11616108, 13552126, 20328189, 27104252, 40656378, 81312756]

約数ペア:

[(1, 81312756), (2, 40656378), (3, 27104252), (4, 20328189), (6, 13552126), (7, 11616108), (12, 6776063), (14, 5808054), (21, 3872036), (28, 2904027), (42, 1936018), (49, 1659444), (61, 1332996), (84, 968009), (98, 829722), (122, 666498), (147, 553148), (183, 444332), (196, 414861), (244, 333249), (294, 276574), (366, 222166), (427, 190428), (588, 138287), (732, 111083), (854, 95214), (1281, 63476), (1708, 47607), (2267, 35868), (2562, 31738), (2989, 27204), (4534, 17934), (5124, 15869), (5978, 13602), (6801, 11956), (8967, 9068)]