21507642

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{859}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 50712480

約数和(自身を除く): 29204838

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 107, 117, 214, 234, 321, 642, 859, 963, 1391, 1718, 1926, 2577, 2782, 4173, 5154, 7731, 8346, 11167, 12519, 15462, 22334, 25038, 33501, 67002, 91913, 100503, 183826, 201006, 275739, 551478, 827217, 1194869, 1654434, 2389738, 3584607, 7169214, 10753821, 21507642]

約数ペア:

[(1, 21507642), (2, 10753821), (3, 7169214), (6, 3584607), (9, 2389738), (13, 1654434), (18, 1194869), (26, 827217), (39, 551478), (78, 275739), (107, 201006), (117, 183826), (214, 100503), (234, 91913), (321, 67002), (642, 33501), (859, 25038), (963, 22334), (1391, 15462), (1718, 12519), (1926, 11167), (2577, 8346), (2782, 7731), (4173, 5154)]