21453714

素因数分解:

$2^1\times 3^3\times {\mathrm{47}}^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1$

素因数の和:244

約数の個数: 64

約数和(自身を含む): 49766400

約数和(自身を除く): 28312686

約数列:

[1, 2, 3, 6, 9, 18, 27, 47, 54, 79, 94, 107, 141, 158, 214, 237, 282, 321, 423, 474, 642, 711, 846, 963, 1269, 1422, 1926, 2133, 2538, 2889, 3713, 4266, 5029, 5778, 7426, 8453, 10058, 11139, 15087, 16906, 22278, 25359, 30174, 33417, 45261, 50718, 66834, 76077, 90522, 100251, 135783, 152154, 200502, 228231, 271566, 397291, 456462, 794582, 1191873, 2383746, 3575619, 7151238, 10726857, 21453714]

約数ペア:

[(1, 21453714), (2, 10726857), (3, 7151238), (6, 3575619), (9, 2383746), (18, 1191873), (27, 794582), (47, 456462), (54, 397291), (79, 271566), (94, 228231), (107, 200502), (141, 152154), (158, 135783), (214, 100251), (237, 90522), (282, 76077), (321, 66834), (423, 50718), (474, 45261), (642, 33417), (711, 30174), (846, 25359), (963, 22278), (1269, 16906), (1422, 15087), (1926, 11139), (2133, 10058), (2538, 8453), (2889, 7426), (3713, 5778), (4266, 5029)]