21155984

素因数分解:

$2^4\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{307}}^1$

素因数の和:447

約数の個数: 40

約数和(自身を含む): 42393120

約数和(自身を除く): 21237136

約数列:

[1, 2, 4, 8, 16, 59, 73, 118, 146, 236, 292, 307, 472, 584, 614, 944, 1168, 1228, 2456, 4307, 4912, 8614, 17228, 18113, 22411, 34456, 36226, 44822, 68912, 72452, 89644, 144904, 179288, 289808, 358576, 1322249, 2644498, 5288996, 10577992, 21155984]

約数ペア:

[(1, 21155984), (2, 10577992), (4, 5288996), (8, 2644498), (16, 1322249), (59, 358576), (73, 289808), (118, 179288), (146, 144904), (236, 89644), (292, 72452), (307, 68912), (472, 44822), (584, 36226), (614, 34456), (944, 22411), (1168, 18113), (1228, 17228), (2456, 8614), (4307, 4912)]