81748720

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{9043}}^1$

素因数の和:9169

約数の個数: 40

約数和(自身を含む): 191768976

約数和(自身を除く): 110020256

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 4520, 9040, 9043, 18086, 36172, 45215, 72344, 90430, 144688, 180860, 361720, 723440, 1021859, 2043718, 4087436, 5109295, 8174872, 10218590, 16349744, 20437180, 40874360, 81748720]

約数ペア:

[(1, 81748720), (2, 40874360), (4, 20437180), (5, 16349744), (8, 10218590), (10, 8174872), (16, 5109295), (20, 4087436), (40, 2043718), (80, 1021859), (113, 723440), (226, 361720), (452, 180860), (565, 144688), (904, 90430), (1130, 72344), (1808, 45215), (2260, 36172), (4520, 18086), (9040, 9043)]