81581520

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{311}}^1\times {\mathrm{1093}}^1$

素因数の和:1420

約数の個数: 80

約数和(自身を含む): 253948032

約数和(自身を除く): 172366512

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 311, 622, 933, 1093, 1244, 1555, 1866, 2186, 2488, 3110, 3279, 3732, 4372, 4665, 4976, 5465, 6220, 6558, 7464, 8744, 9330, 10930, 12440, 13116, 14928, 16395, 17488, 18660, 21860, 24880, 26232, 32790, 37320, 43720, 52464, 65580, 74640, 87440, 131160, 262320, 339923, 679846, 1019769, 1359692, 1699615, 2039538, 2719384, 3399230, 4079076, 5098845, 5438768, 6798460, 8158152, 10197690, 13596920, 16316304, 20395380, 27193840, 40790760, 81581520]

約数ペア:

[(1, 81581520), (2, 40790760), (3, 27193840), (4, 20395380), (5, 16316304), (6, 13596920), (8, 10197690), (10, 8158152), (12, 6798460), (15, 5438768), (16, 5098845), (20, 4079076), (24, 3399230), (30, 2719384), (40, 2039538), (48, 1699615), (60, 1359692), (80, 1019769), (120, 679846), (240, 339923), (311, 262320), (622, 131160), (933, 87440), (1093, 74640), (1244, 65580), (1555, 52464), (1866, 43720), (2186, 37320), (2488, 32790), (3110, 26232), (3279, 24880), (3732, 21860), (4372, 18660), (4665, 17488), (4976, 16395), (5465, 14928), (6220, 13116), (6558, 12440), (7464, 10930), (8744, 9330)]