21235980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8231}}^1$

素因数の和:8286

約数の個数: 48

約数和(自身を含む): 60850944

約数和(自身を除く): 39614964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 8231, 16462, 24693, 32924, 41155, 49386, 82310, 98772, 123465, 164620, 246930, 353933, 493860, 707866, 1061799, 1415732, 1769665, 2123598, 3539330, 4247196, 5308995, 7078660, 10617990, 21235980]

約数ペア:

[(1, 21235980), (2, 10617990), (3, 7078660), (4, 5308995), (5, 4247196), (6, 3539330), (10, 2123598), (12, 1769665), (15, 1415732), (20, 1061799), (30, 707866), (43, 493860), (60, 353933), (86, 246930), (129, 164620), (172, 123465), (215, 98772), (258, 82310), (430, 49386), (516, 41155), (645, 32924), (860, 24693), (1290, 16462), (2580, 8231)]