21457566

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{857}}^1$

素因数の和:985

約数の個数: 48

約数和(自身を含む): 50594544

約数和(自身を除く): 29136978

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 107, 117, 214, 234, 321, 642, 857, 963, 1391, 1714, 1926, 2571, 2782, 4173, 5142, 7713, 8346, 11141, 12519, 15426, 22282, 25038, 33423, 66846, 91699, 100269, 183398, 200538, 275097, 550194, 825291, 1192087, 1650582, 2384174, 3576261, 7152522, 10728783, 21457566]

約数ペア:

[(1, 21457566), (2, 10728783), (3, 7152522), (6, 3576261), (9, 2384174), (13, 1650582), (18, 1192087), (26, 825291), (39, 550194), (78, 275097), (107, 200538), (117, 183398), (214, 100269), (234, 91699), (321, 66846), (642, 33423), (857, 25038), (963, 22282), (1391, 15426), (1714, 12519), (1926, 11141), (2571, 8346), (2782, 7713), (4173, 5142)]