199641520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{1979}}^1$

素因数の和:2102

約数の個数: 80

約数和(自身を含む): 505280160

約数和(自身を除く): 305638640

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 97, 104, 130, 194, 208, 260, 388, 485, 520, 776, 970, 1040, 1261, 1552, 1940, 1979, 2522, 3880, 3958, 5044, 6305, 7760, 7916, 9895, 10088, 12610, 15832, 19790, 20176, 25220, 25727, 31664, 39580, 50440, 51454, 79160, 100880, 102908, 128635, 158320, 191963, 205816, 257270, 383926, 411632, 514540, 767852, 959815, 1029080, 1535704, 1919630, 2058160, 2495519, 3071408, 3839260, 4991038, 7678520, 9982076, 12477595, 15357040, 19964152, 24955190, 39928304, 49910380, 99820760, 199641520]

約数ペア:

[(1, 199641520), (2, 99820760), (4, 49910380), (5, 39928304), (8, 24955190), (10, 19964152), (13, 15357040), (16, 12477595), (20, 9982076), (26, 7678520), (40, 4991038), (52, 3839260), (65, 3071408), (80, 2495519), (97, 2058160), (104, 1919630), (130, 1535704), (194, 1029080), (208, 959815), (260, 767852), (388, 514540), (485, 411632), (520, 383926), (776, 257270), (970, 205816), (1040, 191963), (1261, 158320), (1552, 128635), (1940, 102908), (1979, 100880), (2522, 79160), (3880, 51454), (3958, 50440), (5044, 39580), (6305, 31664), (7760, 25727), (7916, 25220), (9895, 20176), (10088, 19790), (12610, 15832)]