21049440

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43853}}^1$

素因数の和:43871

約数の個数: 48

約数和(自身を含む): 66307248

約数和(自身を除く): 45257808

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43853, 87706, 131559, 175412, 219265, 263118, 350824, 438530, 526236, 657795, 701648, 877060, 1052472, 1315590, 1403296, 1754120, 2104944, 2631180, 3508240, 4209888, 5262360, 7016480, 10524720, 21049440]

約数ペア:

[(1, 21049440), (2, 10524720), (3, 7016480), (4, 5262360), (5, 4209888), (6, 3508240), (8, 2631180), (10, 2104944), (12, 1754120), (15, 1403296), (16, 1315590), (20, 1052472), (24, 877060), (30, 701648), (32, 657795), (40, 526236), (48, 438530), (60, 350824), (80, 263118), (96, 219265), (120, 175412), (160, 131559), (240, 87706), (480, 43853)]