28279217780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1444291}}^1$

素因数の和:1444400

約数の個数: 48

約数和(自身を含む): 65513085120

約数和(自身を除く): 37233867340

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1780, 1958, 3916, 4895, 9790, 19580, 1444291, 2888582, 5777164, 7221455, 14442910, 15887201, 28885820, 31774402, 63548804, 79436005, 128541899, 158872010, 257083798, 317744020, 514167596, 642709495, 1285418990, 1413960889, 2570837980, 2827921778, 5655843556, 7069804445, 14139608890, 28279217780]

約数ペア:

[(1, 28279217780), (2, 14139608890), (4, 7069804445), (5, 5655843556), (10, 2827921778), (11, 2570837980), (20, 1413960889), (22, 1285418990), (44, 642709495), (55, 514167596), (89, 317744020), (110, 257083798), (178, 158872010), (220, 128541899), (356, 79436005), (445, 63548804), (890, 31774402), (979, 28885820), (1780, 15887201), (1958, 14442910), (3916, 7221455), (4895, 5777164), (9790, 2888582), (19580, 1444291)]