21778330

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{421}}^1\times {\mathrm{739}}^1$

素因数の和:1174

約数の個数: 32

約数和(自身を含む): 44968320

約数和(自身を除く): 23189990

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 421, 739, 842, 1478, 2105, 2947, 3695, 4210, 5173, 5894, 7390, 10346, 14735, 25865, 29470, 51730, 311119, 622238, 1555595, 2177833, 3111190, 4355666, 10889165, 21778330]

約数ペア:

[(1, 21778330), (2, 10889165), (5, 4355666), (7, 3111190), (10, 2177833), (14, 1555595), (35, 622238), (70, 311119), (421, 51730), (739, 29470), (842, 25865), (1478, 14735), (2105, 10346), (2947, 7390), (3695, 5894), (4210, 5173)]