80879540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{1999}}^1$

素因数の和:2049

約数の個数: 72

約数和(自身を含む): 206304000

約数和(自身を除く): 125424460

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 578, 595, 1156, 1190, 1445, 1999, 2023, 2380, 2890, 3998, 4046, 5780, 7996, 8092, 9995, 10115, 13993, 19990, 20230, 27986, 33983, 39980, 40460, 55972, 67966, 69965, 135932, 139930, 169915, 237881, 279860, 339830, 475762, 577711, 679660, 951524, 1155422, 1189405, 2310844, 2378810, 2888555, 4043977, 4757620, 5777110, 8087954, 11554220, 16175908, 20219885, 40439770, 80879540]

約数ペア:

[(1, 80879540), (2, 40439770), (4, 20219885), (5, 16175908), (7, 11554220), (10, 8087954), (14, 5777110), (17, 4757620), (20, 4043977), (28, 2888555), (34, 2378810), (35, 2310844), (68, 1189405), (70, 1155422), (85, 951524), (119, 679660), (140, 577711), (170, 475762), (238, 339830), (289, 279860), (340, 237881), (476, 169915), (578, 139930), (595, 135932), (1156, 69965), (1190, 67966), (1445, 55972), (1999, 40460), (2023, 39980), (2380, 33983), (2890, 27986), (3998, 20230), (4046, 19990), (5780, 13993), (7996, 10115), (8092, 9995)]