640045920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{78437}}^1$

素因数の和:78472

約数の個数: 96

約数和(自身を含む): 2134768608

約数和(自身を除く): 1494722688

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 68, 80, 85, 96, 102, 120, 136, 160, 170, 204, 240, 255, 272, 340, 408, 480, 510, 544, 680, 816, 1020, 1360, 1632, 2040, 2720, 4080, 8160, 78437, 156874, 235311, 313748, 392185, 470622, 627496, 784370, 941244, 1176555, 1254992, 1333429, 1568740, 1882488, 2353110, 2509984, 2666858, 3137480, 3764976, 4000287, 4706220, 5333716, 6274960, 6667145, 7529952, 8000574, 9412440, 10667432, 12549920, 13334290, 16001148, 18824880, 20001435, 21334864, 26668580, 32002296, 37649760, 40002870, 42669728, 53337160, 64004592, 80005740, 106674320, 128009184, 160011480, 213348640, 320022960, 640045920]

約数ペア:

[(1, 640045920), (2, 320022960), (3, 213348640), (4, 160011480), (5, 128009184), (6, 106674320), (8, 80005740), (10, 64004592), (12, 53337160), (15, 42669728), (16, 40002870), (17, 37649760), (20, 32002296), (24, 26668580), (30, 21334864), (32, 20001435), (34, 18824880), (40, 16001148), (48, 13334290), (51, 12549920), (60, 10667432), (68, 9412440), (80, 8000574), (85, 7529952), (96, 6667145), (102, 6274960), (120, 5333716), (136, 4706220), (160, 4000287), (170, 3764976), (204, 3137480), (240, 2666858), (255, 2509984), (272, 2353110), (340, 1882488), (408, 1568740), (480, 1333429), (510, 1254992), (544, 1176555), (680, 941244), (816, 784370), (1020, 627496), (1360, 470622), (1632, 392185), (2040, 313748), (2720, 235311), (4080, 156874), (8160, 78437)]