21029970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53923}}^1$

素因数の和:53946

約数の個数: 32

約数和(自身を含む): 54355392

約数和(自身を除く): 33325422

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53923, 107846, 161769, 269615, 323538, 539230, 700999, 808845, 1401998, 1617690, 2102997, 3504995, 4205994, 7009990, 10514985, 21029970]

約数ペア:

[(1, 21029970), (2, 10514985), (3, 7009990), (5, 4205994), (6, 3504995), (10, 2102997), (13, 1617690), (15, 1401998), (26, 808845), (30, 700999), (39, 539230), (65, 323538), (78, 269615), (130, 161769), (195, 107846), (390, 53923)]