21521360

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38431}}^1$

素因数の和:38451

約数の個数: 40

約数和(自身を含む): 57186816

約数和(自身を除く): 35665456

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38431, 76862, 153724, 192155, 269017, 307448, 384310, 538034, 614896, 768620, 1076068, 1345085, 1537240, 2152136, 2690170, 3074480, 4304272, 5380340, 10760680, 21521360]

約数ペア:

[(1, 21521360), (2, 10760680), (4, 5380340), (5, 4304272), (7, 3074480), (8, 2690170), (10, 2152136), (14, 1537240), (16, 1345085), (20, 1076068), (28, 768620), (35, 614896), (40, 538034), (56, 384310), (70, 307448), (80, 269017), (112, 192155), (140, 153724), (280, 76862), (560, 38431)]