21777920

素因数分解:

$2^9\times 5^1\times {\mathrm{47}}^1\times {\mathrm{181}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 53621568

約数和(自身を除く): 31843648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 47, 64, 80, 94, 128, 160, 181, 188, 235, 256, 320, 362, 376, 470, 512, 640, 724, 752, 905, 940, 1280, 1448, 1504, 1810, 1880, 2560, 2896, 3008, 3620, 3760, 5792, 6016, 7240, 7520, 8507, 11584, 12032, 14480, 15040, 17014, 23168, 24064, 28960, 30080, 34028, 42535, 46336, 57920, 60160, 68056, 85070, 92672, 115840, 120320, 136112, 170140, 231680, 272224, 340280, 463360, 544448, 680560, 1088896, 1361120, 2177792, 2722240, 4355584, 5444480, 10888960, 21777920]

約数ペア:

[(1, 21777920), (2, 10888960), (4, 5444480), (5, 4355584), (8, 2722240), (10, 2177792), (16, 1361120), (20, 1088896), (32, 680560), (40, 544448), (47, 463360), (64, 340280), (80, 272224), (94, 231680), (128, 170140), (160, 136112), (181, 120320), (188, 115840), (235, 92672), (256, 85070), (320, 68056), (362, 60160), (376, 57920), (470, 46336), (512, 42535), (640, 34028), (724, 30080), (752, 28960), (905, 24064), (940, 23168), (1280, 17014), (1448, 15040), (1504, 14480), (1810, 12032), (1880, 11584), (2560, 8507), (2896, 7520), (3008, 7240), (3620, 6016), (3760, 5792)]