12780680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{937}}^1$

素因数の和:990

約数の個数: 64

約数和(自身を含む): 32417280

約数和(自身を除く): 19636600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 31, 40, 44, 55, 62, 88, 110, 124, 155, 220, 248, 310, 341, 440, 620, 682, 937, 1240, 1364, 1705, 1874, 2728, 3410, 3748, 4685, 6820, 7496, 9370, 10307, 13640, 18740, 20614, 29047, 37480, 41228, 51535, 58094, 82456, 103070, 116188, 145235, 206140, 232376, 290470, 319517, 412280, 580940, 639034, 1161880, 1278068, 1597585, 2556136, 3195170, 6390340, 12780680]

約数ペア:

[(1, 12780680), (2, 6390340), (4, 3195170), (5, 2556136), (8, 1597585), (10, 1278068), (11, 1161880), (20, 639034), (22, 580940), (31, 412280), (40, 319517), (44, 290470), (55, 232376), (62, 206140), (88, 145235), (110, 116188), (124, 103070), (155, 82456), (220, 58094), (248, 51535), (310, 41228), (341, 37480), (440, 29047), (620, 20614), (682, 18740), (937, 13640), (1240, 10307), (1364, 9370), (1705, 7496), (1874, 6820), (2728, 4685), (3410, 3748)]