19688680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1543}}^1$

素因数の和:1594

約数の個数: 64

約数和(自身を含む): 50025600

約数和(自身を除く): 30336920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1543, 1595, 2552, 3086, 3190, 6172, 6380, 7715, 12344, 12760, 15430, 16973, 30860, 33946, 44747, 61720, 67892, 84865, 89494, 135784, 169730, 178988, 223735, 339460, 357976, 447470, 492217, 678920, 894940, 984434, 1789880, 1968868, 2461085, 3937736, 4922170, 9844340, 19688680]

約数ペア:

[(1, 19688680), (2, 9844340), (4, 4922170), (5, 3937736), (8, 2461085), (10, 1968868), (11, 1789880), (20, 984434), (22, 894940), (29, 678920), (40, 492217), (44, 447470), (55, 357976), (58, 339460), (88, 223735), (110, 178988), (116, 169730), (145, 135784), (220, 89494), (232, 84865), (290, 67892), (319, 61720), (440, 44747), (580, 33946), (638, 30860), (1160, 16973), (1276, 15430), (1543, 12760), (1595, 12344), (2552, 7715), (3086, 6380), (3190, 6172)]