21508480

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{4801}}^1$

素因数の和:4827

約数の個数: 64

約数和(自身を含む): 58776480

約数和(自身を除く): 37268000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 128, 140, 160, 224, 280, 320, 448, 560, 640, 896, 1120, 2240, 4480, 4801, 9602, 19204, 24005, 33607, 38408, 48010, 67214, 76816, 96020, 134428, 153632, 168035, 192040, 268856, 307264, 336070, 384080, 537712, 614528, 672140, 768160, 1075424, 1344280, 1536320, 2150848, 2688560, 3072640, 4301696, 5377120, 10754240, 21508480]

約数ペア:

[(1, 21508480), (2, 10754240), (4, 5377120), (5, 4301696), (7, 3072640), (8, 2688560), (10, 2150848), (14, 1536320), (16, 1344280), (20, 1075424), (28, 768160), (32, 672140), (35, 614528), (40, 537712), (56, 384080), (64, 336070), (70, 307264), (80, 268856), (112, 192040), (128, 168035), (140, 153632), (160, 134428), (224, 96020), (280, 76816), (320, 67214), (448, 48010), (560, 38408), (640, 33607), (896, 24005), (1120, 19204), (2240, 9602), (4480, 4801)]