639488640

素因数分解:

$2^7\times 3^1\times 5^1\times 7^1\times {\mathrm{47581}}^1$

素因数の和:47610

約数の個数: 128

約数和(自身を含む): 2329614720

約数和(自身を除く): 1690126080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 840, 896, 960, 1120, 1344, 1680, 1920, 2240, 2688, 3360, 4480, 6720, 13440, 47581, 95162, 142743, 190324, 237905, 285486, 333067, 380648, 475810, 570972, 666134, 713715, 761296, 951620, 999201, 1141944, 1332268, 1427430, 1522592, 1665335, 1903240, 1998402, 2283888, 2664536, 2854860, 3045184, 3330670, 3806480, 3996804, 4567776, 4996005, 5329072, 5709720, 6090368, 6661340, 7612960, 7993608, 9135552, 9992010, 10658144, 11419440, 13322680, 15225920, 15987216, 18271104, 19984020, 21316288, 22838880, 26645360, 30451840, 31974432, 39968040, 42632576, 45677760, 53290720, 63948864, 79936080, 91355520, 106581440, 127897728, 159872160, 213162880, 319744320, 639488640]

約数ペア:

[(1, 639488640), (2, 319744320), (3, 213162880), (4, 159872160), (5, 127897728), (6, 106581440), (7, 91355520), (8, 79936080), (10, 63948864), (12, 53290720), (14, 45677760), (15, 42632576), (16, 39968040), (20, 31974432), (21, 30451840), (24, 26645360), (28, 22838880), (30, 21316288), (32, 19984020), (35, 18271104), (40, 15987216), (42, 15225920), (48, 13322680), (56, 11419440), (60, 10658144), (64, 9992010), (70, 9135552), (80, 7993608), (84, 7612960), (96, 6661340), (105, 6090368), (112, 5709720), (120, 5329072), (128, 4996005), (140, 4567776), (160, 3996804), (168, 3806480), (192, 3330670), (210, 3045184), (224, 2854860), (240, 2664536), (280, 2283888), (320, 1998402), (336, 1903240), (384, 1665335), (420, 1522592), (448, 1427430), (480, 1332268), (560, 1141944), (640, 999201), (672, 951620), (840, 761296), (896, 713715), (960, 666134), (1120, 570972), (1344, 475810), (1680, 380648), (1920, 333067), (2240, 285486), (2688, 237905), (3360, 190324), (4480, 142743), (6720, 95162), (13440, 47581)]