21630456

素因数分解:

$2^3\times 3^3\times {\mathrm{239}}^1\times {\mathrm{419}}^1$

素因数の和:673

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 38849544

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 108, 216, 239, 419, 478, 717, 838, 956, 1257, 1434, 1676, 1912, 2151, 2514, 2868, 3352, 3771, 4302, 5028, 5736, 6453, 7542, 8604, 10056, 11313, 12906, 15084, 17208, 22626, 25812, 30168, 45252, 51624, 90504, 100141, 200282, 300423, 400564, 600846, 801128, 901269, 1201692, 1802538, 2403384, 2703807, 3605076, 5407614, 7210152, 10815228, 21630456]

約数ペア:

[(1, 21630456), (2, 10815228), (3, 7210152), (4, 5407614), (6, 3605076), (8, 2703807), (9, 2403384), (12, 1802538), (18, 1201692), (24, 901269), (27, 801128), (36, 600846), (54, 400564), (72, 300423), (108, 200282), (216, 100141), (239, 90504), (419, 51624), (478, 45252), (717, 30168), (838, 25812), (956, 22626), (1257, 17208), (1434, 15084), (1676, 12906), (1912, 11313), (2151, 10056), (2514, 8604), (2868, 7542), (3352, 6453), (3771, 5736), (4302, 5028)]