171899420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{111623}}^1$

素因数の和:111650

約数の個数: 48

約数和(自身を含む): 450067968

約数和(自身を除く): 278168548

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 111623, 223246, 446492, 558115, 781361, 1116230, 1227853, 1562722, 2232460, 2455706, 3125444, 3906805, 4911412, 6139265, 7813610, 8594971, 12278530, 15627220, 17189942, 24557060, 34379884, 42974855, 85949710, 171899420]

約数ペア:

[(1, 171899420), (2, 85949710), (4, 42974855), (5, 34379884), (7, 24557060), (10, 17189942), (11, 15627220), (14, 12278530), (20, 8594971), (22, 7813610), (28, 6139265), (35, 4911412), (44, 3906805), (55, 3125444), (70, 2455706), (77, 2232460), (110, 1562722), (140, 1227853), (154, 1116230), (220, 781361), (308, 558115), (385, 446492), (770, 223246), (1540, 111623)]