21644955

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6971}}^1$

素因数の和:7008

約数の個数: 32

約数和(自身を含む): 40158720

約数和(自身を除く): 18513765

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6971, 20913, 34855, 62739, 104565, 160333, 188217, 313695, 480999, 801665, 941085, 1442997, 2404995, 4328991, 7214985, 21644955]

約数ペア:

[(1, 21644955), (3, 7214985), (5, 4328991), (9, 2404995), (15, 1442997), (23, 941085), (27, 801665), (45, 480999), (69, 313695), (115, 188217), (135, 160333), (207, 104565), (345, 62739), (621, 34855), (1035, 20913), (3105, 6971)]