21104730

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{557}}^1$

素因数の和:991

約数の個数: 48

約数和(自身を含む): 55101384

約数和(自身を除く): 33996654

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 421, 557, 842, 1114, 1263, 1671, 2105, 2526, 2785, 3342, 3789, 4210, 5013, 5570, 6315, 7578, 8355, 10026, 12630, 16710, 18945, 25065, 37890, 50130, 234497, 468994, 703491, 1172485, 1406982, 2110473, 2344970, 3517455, 4220946, 7034910, 10552365, 21104730]

約数ペア:

[(1, 21104730), (2, 10552365), (3, 7034910), (5, 4220946), (6, 3517455), (9, 2344970), (10, 2110473), (15, 1406982), (18, 1172485), (30, 703491), (45, 468994), (90, 234497), (421, 50130), (557, 37890), (842, 25065), (1114, 18945), (1263, 16710), (1671, 12630), (2105, 10026), (2526, 8355), (2785, 7578), (3342, 6315), (3789, 5570), (4210, 5013)]