20873520

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{547}}^1$

素因数の和:619

約数の個数: 120

約数和(自身を含む): 71553456

約数和(自身を除く): 50679936

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 53, 60, 72, 80, 90, 106, 120, 144, 159, 180, 212, 240, 265, 318, 360, 424, 477, 530, 547, 636, 720, 795, 848, 954, 1060, 1094, 1272, 1590, 1641, 1908, 2120, 2188, 2385, 2544, 2735, 3180, 3282, 3816, 4240, 4376, 4770, 4923, 5470, 6360, 6564, 7632, 8205, 8752, 9540, 9846, 10940, 12720, 13128, 16410, 19080, 19692, 21880, 24615, 26256, 28991, 32820, 38160, 39384, 43760, 49230, 57982, 65640, 78768, 86973, 98460, 115964, 131280, 144955, 173946, 196920, 231928, 260919, 289910, 347892, 393840, 434865, 463856, 521838, 579820, 695784, 869730, 1043676, 1159640, 1304595, 1391568, 1739460, 2087352, 2319280, 2609190, 3478920, 4174704, 5218380, 6957840, 10436760, 20873520]

約数ペア:

[(1, 20873520), (2, 10436760), (3, 6957840), (4, 5218380), (5, 4174704), (6, 3478920), (8, 2609190), (9, 2319280), (10, 2087352), (12, 1739460), (15, 1391568), (16, 1304595), (18, 1159640), (20, 1043676), (24, 869730), (30, 695784), (36, 579820), (40, 521838), (45, 463856), (48, 434865), (53, 393840), (60, 347892), (72, 289910), (80, 260919), (90, 231928), (106, 196920), (120, 173946), (144, 144955), (159, 131280), (180, 115964), (212, 98460), (240, 86973), (265, 78768), (318, 65640), (360, 57982), (424, 49230), (477, 43760), (530, 39384), (547, 38160), (636, 32820), (720, 28991), (795, 26256), (848, 24615), (954, 21880), (1060, 19692), (1094, 19080), (1272, 16410), (1590, 13128), (1641, 12720), (1908, 10940), (2120, 9846), (2188, 9540), (2385, 8752), (2544, 8205), (2735, 7632), (3180, 6564), (3282, 6360), (3816, 5470), (4240, 4923), (4376, 4770)]