21245544

素因数分解:

$2^3\times 3^3\times {\mathrm{41}}^1\times {\mathrm{2399}}^1$

素因数の和:2455

約数の個数: 64

約数和(自身を含む): 60480000

約数和(自身を除く): 39234456

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 41, 54, 72, 82, 108, 123, 164, 216, 246, 328, 369, 492, 738, 984, 1107, 1476, 2214, 2399, 2952, 4428, 4798, 7197, 8856, 9596, 14394, 19192, 21591, 28788, 43182, 57576, 64773, 86364, 98359, 129546, 172728, 196718, 259092, 295077, 393436, 518184, 590154, 786872, 885231, 1180308, 1770462, 2360616, 2655693, 3540924, 5311386, 7081848, 10622772, 21245544]

約数ペア:

[(1, 21245544), (2, 10622772), (3, 7081848), (4, 5311386), (6, 3540924), (8, 2655693), (9, 2360616), (12, 1770462), (18, 1180308), (24, 885231), (27, 786872), (36, 590154), (41, 518184), (54, 393436), (72, 295077), (82, 259092), (108, 196718), (123, 172728), (164, 129546), (216, 98359), (246, 86364), (328, 64773), (369, 57576), (492, 43182), (738, 28788), (984, 21591), (1107, 19192), (1476, 14394), (2214, 9596), (2399, 8856), (2952, 7197), (4428, 4798)]