388650880

素因数分解:

$2^7\times 5^1\times {\mathrm{263}}^1\times {\mathrm{2309}}^1$

素因数の和:2591

約数の個数: 64

約数和(自身を含む): 933055200

約数和(自身を除く): 544404320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 263, 320, 526, 640, 1052, 1315, 2104, 2309, 2630, 4208, 4618, 5260, 8416, 9236, 10520, 11545, 16832, 18472, 21040, 23090, 33664, 36944, 42080, 46180, 73888, 84160, 92360, 147776, 168320, 184720, 295552, 369440, 607267, 738880, 1214534, 1477760, 2429068, 3036335, 4858136, 6072670, 9716272, 12145340, 19432544, 24290680, 38865088, 48581360, 77730176, 97162720, 194325440, 388650880]

約数ペア:

[(1, 388650880), (2, 194325440), (4, 97162720), (5, 77730176), (8, 48581360), (10, 38865088), (16, 24290680), (20, 19432544), (32, 12145340), (40, 9716272), (64, 6072670), (80, 4858136), (128, 3036335), (160, 2429068), (263, 1477760), (320, 1214534), (526, 738880), (640, 607267), (1052, 369440), (1315, 295552), (2104, 184720), (2309, 168320), (2630, 147776), (4208, 92360), (4618, 84160), (5260, 73888), (8416, 46180), (9236, 42080), (10520, 36944), (11545, 33664), (16832, 23090), (18472, 21040)]