25681720

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{6619}}^1$

素因数の和:6727

約数の個数: 32

約数和(自身を含む): 58388400

約数和(自身を除く): 32706680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 6619, 13238, 26476, 33095, 52952, 66190, 132380, 264760, 642043, 1284086, 2568172, 3210215, 5136344, 6420430, 12840860, 25681720]

約数ペア:

[(1, 25681720), (2, 12840860), (4, 6420430), (5, 5136344), (8, 3210215), (10, 2568172), (20, 1284086), (40, 642043), (97, 264760), (194, 132380), (388, 66190), (485, 52952), (776, 33095), (970, 26476), (1940, 13238), (3880, 6619)]