128971520

素因数分解:

$2^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{5927}}^1$

素因数の和:5965

約数の個数: 72

約数和(自身を含む): 327154464

約数和(自身を除く): 198182944

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 128, 136, 160, 170, 256, 272, 320, 340, 544, 640, 680, 1088, 1280, 1360, 2176, 2720, 4352, 5440, 5927, 10880, 11854, 21760, 23708, 29635, 47416, 59270, 94832, 100759, 118540, 189664, 201518, 237080, 379328, 403036, 474160, 503795, 758656, 806072, 948320, 1007590, 1517312, 1612144, 1896640, 2015180, 3224288, 3793280, 4030360, 6448576, 7586560, 8060720, 12897152, 16121440, 25794304, 32242880, 64485760, 128971520]

約数ペア:

[(1, 128971520), (2, 64485760), (4, 32242880), (5, 25794304), (8, 16121440), (10, 12897152), (16, 8060720), (17, 7586560), (20, 6448576), (32, 4030360), (34, 3793280), (40, 3224288), (64, 2015180), (68, 1896640), (80, 1612144), (85, 1517312), (128, 1007590), (136, 948320), (160, 806072), (170, 758656), (256, 503795), (272, 474160), (320, 403036), (340, 379328), (544, 237080), (640, 201518), (680, 189664), (1088, 118540), (1280, 100759), (1360, 94832), (2176, 59270), (2720, 47416), (4352, 29635), (5440, 23708), (5927, 21760), (10880, 11854)]