79992400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^1\times {\mathrm{6451}}^1$

素因数の和:6500

約数の個数: 60

約数和(自身を含む): 198411904

約数和(自身を除く): 118419504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 248, 310, 400, 496, 620, 775, 1240, 1550, 2480, 3100, 6200, 6451, 12400, 12902, 25804, 32255, 51608, 64510, 103216, 129020, 161275, 199981, 258040, 322550, 399962, 516080, 645100, 799924, 999905, 1290200, 1599848, 1999810, 2580400, 3199696, 3999620, 4999525, 7999240, 9999050, 15998480, 19998100, 39996200, 79992400]

約数ペア:

[(1, 79992400), (2, 39996200), (4, 19998100), (5, 15998480), (8, 9999050), (10, 7999240), (16, 4999525), (20, 3999620), (25, 3199696), (31, 2580400), (40, 1999810), (50, 1599848), (62, 1290200), (80, 999905), (100, 799924), (124, 645100), (155, 516080), (200, 399962), (248, 322550), (310, 258040), (400, 199981), (496, 161275), (620, 129020), (775, 103216), (1240, 64510), (1550, 51608), (2480, 32255), (3100, 25804), (6200, 12902), (6451, 12400)]