21330180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{163}}^1\times {\mathrm{727}}^1$

素因数の和:905

約数の個数: 72

約数和(自身を含む): 65188032

約数和(自身を除く): 43857852

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 163, 180, 326, 489, 652, 727, 815, 978, 1454, 1467, 1630, 1956, 2181, 2445, 2908, 2934, 3260, 3635, 4362, 4890, 5868, 6543, 7270, 7335, 8724, 9780, 10905, 13086, 14540, 14670, 21810, 26172, 29340, 32715, 43620, 65430, 118501, 130860, 237002, 355503, 474004, 592505, 711006, 1066509, 1185010, 1422012, 1777515, 2133018, 2370020, 3555030, 4266036, 5332545, 7110060, 10665090, 21330180]

約数ペア:

[(1, 21330180), (2, 10665090), (3, 7110060), (4, 5332545), (5, 4266036), (6, 3555030), (9, 2370020), (10, 2133018), (12, 1777515), (15, 1422012), (18, 1185010), (20, 1066509), (30, 711006), (36, 592505), (45, 474004), (60, 355503), (90, 237002), (163, 130860), (180, 118501), (326, 65430), (489, 43620), (652, 32715), (727, 29340), (815, 26172), (978, 21810), (1454, 14670), (1467, 14540), (1630, 13086), (1956, 10905), (2181, 9780), (2445, 8724), (2908, 7335), (2934, 7270), (3260, 6543), (3635, 5868), (4362, 4890)]