12800320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:228

約数の個数: 112

約数和(自身を含む): 34948368

約数和(自身を除く): 22148048

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 130, 136, 160, 170, 181, 208, 221, 260, 272, 320, 340, 362, 416, 442, 520, 544, 680, 724, 832, 884, 905, 1040, 1088, 1105, 1360, 1448, 1768, 1810, 2080, 2210, 2353, 2720, 2896, 3077, 3536, 3620, 4160, 4420, 4706, 5440, 5792, 6154, 7072, 7240, 8840, 9412, 11584, 11765, 12308, 14144, 14480, 15385, 17680, 18824, 23530, 24616, 28960, 30770, 35360, 37648, 40001, 47060, 49232, 57920, 61540, 70720, 75296, 80002, 94120, 98464, 123080, 150592, 160004, 188240, 196928, 200005, 246160, 320008, 376480, 400010, 492320, 640016, 752960, 800020, 984640, 1280032, 1600040, 2560064, 3200080, 6400160, 12800320]

約数ペア:

[(1, 12800320), (2, 6400160), (4, 3200080), (5, 2560064), (8, 1600040), (10, 1280032), (13, 984640), (16, 800020), (17, 752960), (20, 640016), (26, 492320), (32, 400010), (34, 376480), (40, 320008), (52, 246160), (64, 200005), (65, 196928), (68, 188240), (80, 160004), (85, 150592), (104, 123080), (130, 98464), (136, 94120), (160, 80002), (170, 75296), (181, 70720), (208, 61540), (221, 57920), (260, 49232), (272, 47060), (320, 40001), (340, 37648), (362, 35360), (416, 30770), (442, 28960), (520, 24616), (544, 23530), (680, 18824), (724, 17680), (832, 15385), (884, 14480), (905, 14144), (1040, 12308), (1088, 11765), (1105, 11584), (1360, 9412), (1448, 8840), (1768, 7240), (1810, 7072), (2080, 6154), (2210, 5792), (2353, 5440), (2720, 4706), (2896, 4420), (3077, 4160), (3536, 3620)]