320043880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{311}}^1\times {\mathrm{1979}}^1$

素因数の和:2314

約数の個数: 64

約数和(自身を含む): 778377600

約数和(自身を除く): 458333720

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 311, 520, 622, 1244, 1555, 1979, 2488, 3110, 3958, 4043, 6220, 7916, 8086, 9895, 12440, 15832, 16172, 19790, 20215, 25727, 32344, 39580, 40430, 51454, 79160, 80860, 102908, 128635, 161720, 205816, 257270, 514540, 615469, 1029080, 1230938, 2461876, 3077345, 4923752, 6154690, 8001097, 12309380, 16002194, 24618760, 32004388, 40005485, 64008776, 80010970, 160021940, 320043880]

約数ペア:

[(1, 320043880), (2, 160021940), (4, 80010970), (5, 64008776), (8, 40005485), (10, 32004388), (13, 24618760), (20, 16002194), (26, 12309380), (40, 8001097), (52, 6154690), (65, 4923752), (104, 3077345), (130, 2461876), (260, 1230938), (311, 1029080), (520, 615469), (622, 514540), (1244, 257270), (1555, 205816), (1979, 161720), (2488, 128635), (3110, 102908), (3958, 80860), (4043, 79160), (6220, 51454), (7916, 40430), (8086, 39580), (9895, 32344), (12440, 25727), (15832, 20215), (16172, 19790)]