19859980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{3299}}^1$

素因数の和:3358

約数の個数: 48

約数和(自身を含む): 48787200

約数和(自身を除く): 28927220

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 70, 86, 140, 172, 215, 301, 430, 602, 860, 1204, 1505, 3010, 3299, 6020, 6598, 13196, 16495, 23093, 32990, 46186, 65980, 92372, 115465, 141857, 230930, 283714, 461860, 567428, 709285, 992999, 1418570, 1985998, 2837140, 3971996, 4964995, 9929990, 19859980]

約数ペア:

[(1, 19859980), (2, 9929990), (4, 4964995), (5, 3971996), (7, 2837140), (10, 1985998), (14, 1418570), (20, 992999), (28, 709285), (35, 567428), (43, 461860), (70, 283714), (86, 230930), (140, 141857), (172, 115465), (215, 92372), (301, 65980), (430, 46186), (602, 32990), (860, 23093), (1204, 16495), (1505, 13196), (3010, 6598), (3299, 6020)]