81525760

素因数分解:

$2^{10}\times 5^1\times {\mathrm{15923}}^1$

素因数の和:15948

約数の個数: 44

約数和(自身を含む): 195578568

約数和(自身を除く): 114052808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 15923, 31846, 63692, 79615, 127384, 159230, 254768, 318460, 509536, 636920, 1019072, 1273840, 2038144, 2547680, 4076288, 5095360, 8152576, 10190720, 16305152, 20381440, 40762880, 81525760]

約数ペア:

[(1, 81525760), (2, 40762880), (4, 20381440), (5, 16305152), (8, 10190720), (10, 8152576), (16, 5095360), (20, 4076288), (32, 2547680), (40, 2038144), (64, 1273840), (80, 1019072), (128, 636920), (160, 509536), (256, 318460), (320, 254768), (512, 159230), (640, 127384), (1024, 79615), (1280, 63692), (2560, 31846), (5120, 15923)]