21025236420

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{12978541}}^1$

素因数の和:12978562

約数の個数: 60

約数和(自身を含む): 65956950444

約数和(自身を除く): 44931714024

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 270, 324, 405, 540, 810, 1620, 12978541, 25957082, 38935623, 51914164, 64892705, 77871246, 116806869, 129785410, 155742492, 194678115, 233613738, 259570820, 350420607, 389356230, 467227476, 584034345, 700841214, 778712460, 1051261821, 1168068690, 1401682428, 1752103035, 2102523642, 2336137380, 3504206070, 4205047284, 5256309105, 7008412140, 10512618210, 21025236420]

約数ペア:

[(1, 21025236420), (2, 10512618210), (3, 7008412140), (4, 5256309105), (5, 4205047284), (6, 3504206070), (9, 2336137380), (10, 2102523642), (12, 1752103035), (15, 1401682428), (18, 1168068690), (20, 1051261821), (27, 778712460), (30, 700841214), (36, 584034345), (45, 467227476), (54, 389356230), (60, 350420607), (81, 259570820), (90, 233613738), (108, 194678115), (135, 155742492), (162, 129785410), (180, 116806869), (270, 77871246), (324, 64892705), (405, 51914164), (540, 38935623), (810, 25957082), (1620, 12978541)]