128404720

素因数分解:

$2^4\times 5^1\times {\mathrm{97}}^1\times {\mathrm{16547}}^1$

素因数の和:16657

約数の個数: 40

約数和(自身を含む): 301636944

約数和(自身を除く): 173232224

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 97, 194, 388, 485, 776, 970, 1552, 1940, 3880, 7760, 16547, 33094, 66188, 82735, 132376, 165470, 264752, 330940, 661880, 1323760, 1605059, 3210118, 6420236, 8025295, 12840472, 16050590, 25680944, 32101180, 64202360, 128404720]

約数ペア:

[(1, 128404720), (2, 64202360), (4, 32101180), (5, 25680944), (8, 16050590), (10, 12840472), (16, 8025295), (20, 6420236), (40, 3210118), (80, 1605059), (97, 1323760), (194, 661880), (388, 330940), (485, 264752), (776, 165470), (970, 132376), (1552, 82735), (1940, 66188), (3880, 33094), (7760, 16547)]