643163840

素因数分解:

$2^6\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{2053}}^1$

素因数の和:2170

約数の個数: 112

約数和(自身を含む): 1690359840

約数和(自身を除く): 1047196000

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 64, 80, 88, 89, 110, 160, 176, 178, 220, 320, 352, 356, 440, 445, 704, 712, 880, 890, 979, 1424, 1760, 1780, 1958, 2053, 2848, 3520, 3560, 3916, 4106, 4895, 5696, 7120, 7832, 8212, 9790, 10265, 14240, 15664, 16424, 19580, 20530, 22583, 28480, 31328, 32848, 39160, 41060, 45166, 62656, 65696, 78320, 82120, 90332, 112915, 131392, 156640, 164240, 180664, 182717, 225830, 313280, 328480, 361328, 365434, 451660, 656960, 722656, 730868, 903320, 913585, 1445312, 1461736, 1806640, 1827170, 2009887, 2923472, 3613280, 3654340, 4019774, 5846944, 7226560, 7308680, 8039548, 10049435, 11693888, 14617360, 16079096, 20098870, 29234720, 32158192, 40197740, 58469440, 64316384, 80395480, 128632768, 160790960, 321581920, 643163840]

約数ペア:

[(1, 643163840), (2, 321581920), (4, 160790960), (5, 128632768), (8, 80395480), (10, 64316384), (11, 58469440), (16, 40197740), (20, 32158192), (22, 29234720), (32, 20098870), (40, 16079096), (44, 14617360), (55, 11693888), (64, 10049435), (80, 8039548), (88, 7308680), (89, 7226560), (110, 5846944), (160, 4019774), (176, 3654340), (178, 3613280), (220, 2923472), (320, 2009887), (352, 1827170), (356, 1806640), (440, 1461736), (445, 1445312), (704, 913585), (712, 903320), (880, 730868), (890, 722656), (979, 656960), (1424, 451660), (1760, 365434), (1780, 361328), (1958, 328480), (2053, 313280), (2848, 225830), (3520, 182717), (3560, 180664), (3916, 164240), (4106, 156640), (4895, 131392), (5696, 112915), (7120, 90332), (7832, 82120), (8212, 78320), (9790, 65696), (10265, 62656), (14240, 45166), (15664, 41060), (16424, 39160), (19580, 32848), (20530, 31328), (22583, 28480)]