21217644

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{269}}^1\times {\mathrm{313}}^1$

素因数の和:599

約数の個数: 72

約数和(自身を含む): 61719840

約数和(自身を除く): 40502196

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 269, 313, 538, 626, 807, 939, 1076, 1252, 1614, 1878, 1883, 2191, 2421, 2817, 3228, 3756, 3766, 4382, 4842, 5634, 5649, 6573, 7532, 8764, 9684, 11268, 11298, 13146, 16947, 19719, 22596, 26292, 33894, 39438, 67788, 78876, 84197, 168394, 252591, 336788, 505182, 589379, 757773, 1010364, 1178758, 1515546, 1768137, 2357516, 3031092, 3536274, 5304411, 7072548, 10608822, 21217644]

約数ペア:

[(1, 21217644), (2, 10608822), (3, 7072548), (4, 5304411), (6, 3536274), (7, 3031092), (9, 2357516), (12, 1768137), (14, 1515546), (18, 1178758), (21, 1010364), (28, 757773), (36, 589379), (42, 505182), (63, 336788), (84, 252591), (126, 168394), (252, 84197), (269, 78876), (313, 67788), (538, 39438), (626, 33894), (807, 26292), (939, 22596), (1076, 19719), (1252, 16947), (1614, 13146), (1878, 11298), (1883, 11268), (2191, 9684), (2421, 8764), (2817, 7532), (3228, 6573), (3756, 5649), (3766, 5634), (4382, 4842)]