25628720

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1297}}^1$

素因数の和:1342

約数の個数: 80

約数和(自身を含む): 67599840

約数和(自身を除く): 41971120

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 26, 38, 40, 52, 65, 76, 80, 95, 104, 130, 152, 190, 208, 247, 260, 304, 380, 494, 520, 760, 988, 1040, 1235, 1297, 1520, 1976, 2470, 2594, 3952, 4940, 5188, 6485, 9880, 10376, 12970, 16861, 19760, 20752, 24643, 25940, 33722, 49286, 51880, 67444, 84305, 98572, 103760, 123215, 134888, 168610, 197144, 246430, 269776, 320359, 337220, 394288, 492860, 640718, 674440, 985720, 1281436, 1348880, 1601795, 1971440, 2562872, 3203590, 5125744, 6407180, 12814360, 25628720]

約数ペア:

[(1, 25628720), (2, 12814360), (4, 6407180), (5, 5125744), (8, 3203590), (10, 2562872), (13, 1971440), (16, 1601795), (19, 1348880), (20, 1281436), (26, 985720), (38, 674440), (40, 640718), (52, 492860), (65, 394288), (76, 337220), (80, 320359), (95, 269776), (104, 246430), (130, 197144), (152, 168610), (190, 134888), (208, 123215), (247, 103760), (260, 98572), (304, 84305), (380, 67444), (494, 51880), (520, 49286), (760, 33722), (988, 25940), (1040, 24643), (1235, 20752), (1297, 19760), (1520, 16861), (1976, 12970), (2470, 10376), (2594, 9880), (3952, 6485), (4940, 5188)]