20001551440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{113}}^1\times {\mathrm{170197}}^1$

素因数の和:170336

約数の個数: 80

約数和(自身を含む): 50524297488

約数和(自身を除く): 30522746048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 113, 130, 208, 226, 260, 452, 520, 565, 904, 1040, 1130, 1469, 1808, 2260, 2938, 4520, 5876, 7345, 9040, 11752, 14690, 23504, 29380, 58760, 117520, 170197, 340394, 680788, 850985, 1361576, 1701970, 2212561, 2723152, 3403940, 4425122, 6807880, 8850244, 11062805, 13615760, 17700488, 19232261, 22125610, 35400976, 38464522, 44251220, 76929044, 88502440, 96161305, 153858088, 177004880, 192322610, 250019393, 307716176, 384645220, 500038786, 769290440, 1000077572, 1250096965, 1538580880, 2000155144, 2500193930, 4000310288, 5000387860, 10000775720, 20001551440]

約数ペア:

[(1, 20001551440), (2, 10000775720), (4, 5000387860), (5, 4000310288), (8, 2500193930), (10, 2000155144), (13, 1538580880), (16, 1250096965), (20, 1000077572), (26, 769290440), (40, 500038786), (52, 384645220), (65, 307716176), (80, 250019393), (104, 192322610), (113, 177004880), (130, 153858088), (208, 96161305), (226, 88502440), (260, 76929044), (452, 44251220), (520, 38464522), (565, 35400976), (904, 22125610), (1040, 19232261), (1130, 17700488), (1469, 13615760), (1808, 11062805), (2260, 8850244), (2938, 6807880), (4520, 4425122), (5876, 3403940), (7345, 2723152), (9040, 2212561), (11752, 1701970), (14690, 1361576), (23504, 850985), (29380, 680788), (58760, 340394), (117520, 170197)]