640474320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{156979}}^1$

素因数の和:157012

約数の個数: 80

約数和(自身を含む): 2102276160

約数和(自身を除く): 1461801840

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 170, 204, 240, 255, 272, 340, 408, 510, 680, 816, 1020, 1360, 2040, 4080, 156979, 313958, 470937, 627916, 784895, 941874, 1255832, 1569790, 1883748, 2354685, 2511664, 2668643, 3139580, 3767496, 4709370, 5337286, 6279160, 7534992, 8005929, 9418740, 10674572, 12558320, 13343215, 16011858, 18837480, 21349144, 26686430, 32023716, 37674960, 40029645, 42698288, 53372860, 64047432, 80059290, 106745720, 128094864, 160118580, 213491440, 320237160, 640474320]

約数ペア:

[(1, 640474320), (2, 320237160), (3, 213491440), (4, 160118580), (5, 128094864), (6, 106745720), (8, 80059290), (10, 64047432), (12, 53372860), (15, 42698288), (16, 40029645), (17, 37674960), (20, 32023716), (24, 26686430), (30, 21349144), (34, 18837480), (40, 16011858), (48, 13343215), (51, 12558320), (60, 10674572), (68, 9418740), (80, 8005929), (85, 7534992), (102, 6279160), (120, 5337286), (136, 4709370), (170, 3767496), (204, 3139580), (240, 2668643), (255, 2511664), (272, 2354685), (340, 1883748), (408, 1569790), (510, 1255832), (680, 941874), (816, 784895), (1020, 627916), (1360, 470937), (2040, 313958), (4080, 156979)]