21377280

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{293}}^1$

素因数の和:336

約数の個数: 144

約数和(自身を含む): 72112320

約数和(自身を除く): 50735040

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 256, 285, 293, 304, 320, 380, 384, 456, 480, 570, 586, 608, 640, 760, 768, 879, 912, 960, 1140, 1172, 1216, 1280, 1465, 1520, 1758, 1824, 1920, 2280, 2344, 2432, 2930, 3040, 3516, 3648, 3840, 4395, 4560, 4688, 4864, 5567, 5860, 6080, 7032, 7296, 8790, 9120, 9376, 11134, 11720, 12160, 14064, 14592, 16701, 17580, 18240, 18752, 22268, 23440, 24320, 27835, 28128, 33402, 35160, 36480, 37504, 44536, 46880, 55670, 56256, 66804, 70320, 72960, 75008, 83505, 89072, 93760, 111340, 112512, 133608, 140640, 167010, 178144, 187520, 222680, 225024, 267216, 281280, 334020, 356288, 375040, 445360, 534432, 562560, 668040, 712576, 890720, 1068864, 1125120, 1336080, 1425152, 1781440, 2137728, 2672160, 3562880, 4275456, 5344320, 7125760, 10688640, 21377280]

約数ペア:

[(1, 21377280), (2, 10688640), (3, 7125760), (4, 5344320), (5, 4275456), (6, 3562880), (8, 2672160), (10, 2137728), (12, 1781440), (15, 1425152), (16, 1336080), (19, 1125120), (20, 1068864), (24, 890720), (30, 712576), (32, 668040), (38, 562560), (40, 534432), (48, 445360), (57, 375040), (60, 356288), (64, 334020), (76, 281280), (80, 267216), (95, 225024), (96, 222680), (114, 187520), (120, 178144), (128, 167010), (152, 140640), (160, 133608), (190, 112512), (192, 111340), (228, 93760), (240, 89072), (256, 83505), (285, 75008), (293, 72960), (304, 70320), (320, 66804), (380, 56256), (384, 55670), (456, 46880), (480, 44536), (570, 37504), (586, 36480), (608, 35160), (640, 33402), (760, 28128), (768, 27835), (879, 24320), (912, 23440), (960, 22268), (1140, 18752), (1172, 18240), (1216, 17580), (1280, 16701), (1465, 14592), (1520, 14064), (1758, 12160), (1824, 11720), (1920, 11134), (2280, 9376), (2344, 9120), (2432, 8790), (2930, 7296), (3040, 7032), (3516, 6080), (3648, 5860), (3840, 5567), (4395, 4864), (4560, 4688)]