320412680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{479}}^1\times {\mathrm{2389}}^1$

素因数の和:2886

約数の個数: 64

約数和(自身を含む): 825984000

約数和(自身を除く): 505571320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 479, 958, 1916, 2389, 2395, 3353, 3832, 4778, 4790, 6706, 9556, 9580, 11945, 13412, 16723, 16765, 19112, 19160, 23890, 26824, 33446, 33530, 47780, 66892, 67060, 83615, 95560, 133784, 134120, 167230, 334460, 668920, 1144331, 2288662, 4577324, 5721655, 8010317, 9154648, 11443310, 16020634, 22886620, 32041268, 40051585, 45773240, 64082536, 80103170, 160206340, 320412680]

約数ペア:

[(1, 320412680), (2, 160206340), (4, 80103170), (5, 64082536), (7, 45773240), (8, 40051585), (10, 32041268), (14, 22886620), (20, 16020634), (28, 11443310), (35, 9154648), (40, 8010317), (56, 5721655), (70, 4577324), (140, 2288662), (280, 1144331), (479, 668920), (958, 334460), (1916, 167230), (2389, 134120), (2395, 133784), (3353, 95560), (3832, 83615), (4778, 67060), (4790, 66892), (6706, 47780), (9556, 33530), (9580, 33446), (11945, 26824), (13412, 23890), (16723, 19160), (16765, 19112)]