1278804520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{106213}}^1$

素因数の和:106274

約数の個数: 64

約数和(自身を含む): 3364859520

約数和(自身を除く): 2086055000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2408, 3010, 6020, 12040, 106213, 212426, 424852, 531065, 743491, 849704, 1062130, 1486982, 2124260, 2973964, 3717455, 4248520, 4567159, 5947928, 7434910, 9134318, 14869820, 18268636, 22835795, 29739640, 31970113, 36537272, 45671590, 63940226, 91343180, 127880452, 159850565, 182686360, 255760904, 319701130, 639402260, 1278804520]

約数ペア:

[(1, 1278804520), (2, 639402260), (4, 319701130), (5, 255760904), (7, 182686360), (8, 159850565), (10, 127880452), (14, 91343180), (20, 63940226), (28, 45671590), (35, 36537272), (40, 31970113), (43, 29739640), (56, 22835795), (70, 18268636), (86, 14869820), (140, 9134318), (172, 7434910), (215, 5947928), (280, 4567159), (301, 4248520), (344, 3717455), (430, 2973964), (602, 2124260), (860, 1486982), (1204, 1062130), (1505, 849704), (1720, 743491), (2408, 531065), (3010, 424852), (6020, 212426), (12040, 106213)]