21006240

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:534

約数の個数: 96

約数和(自身を含む): 66951360

約数和(自身を除く): 45945120

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 107, 120, 160, 214, 240, 321, 409, 428, 480, 535, 642, 818, 856, 1070, 1227, 1284, 1605, 1636, 1712, 2045, 2140, 2454, 2568, 3210, 3272, 3424, 4090, 4280, 4908, 5136, 6135, 6420, 6544, 8180, 8560, 9816, 10272, 12270, 12840, 13088, 16360, 17120, 19632, 24540, 25680, 32720, 39264, 43763, 49080, 51360, 65440, 87526, 98160, 131289, 175052, 196320, 218815, 262578, 350104, 437630, 525156, 656445, 700208, 875260, 1050312, 1312890, 1400416, 1750520, 2100624, 2625780, 3501040, 4201248, 5251560, 7002080, 10503120, 21006240]

約数ペア:

[(1, 21006240), (2, 10503120), (3, 7002080), (4, 5251560), (5, 4201248), (6, 3501040), (8, 2625780), (10, 2100624), (12, 1750520), (15, 1400416), (16, 1312890), (20, 1050312), (24, 875260), (30, 700208), (32, 656445), (40, 525156), (48, 437630), (60, 350104), (80, 262578), (96, 218815), (107, 196320), (120, 175052), (160, 131289), (214, 98160), (240, 87526), (321, 65440), (409, 51360), (428, 49080), (480, 43763), (535, 39264), (642, 32720), (818, 25680), (856, 24540), (1070, 19632), (1227, 17120), (1284, 16360), (1605, 13088), (1636, 12840), (1712, 12270), (2045, 10272), (2140, 9816), (2454, 8560), (2568, 8180), (3210, 6544), (3272, 6420), (3424, 6135), (4090, 5136), (4280, 4908)]