21000887970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{643}}^1\times {\mathrm{1088693}}^1$

素因数の和:1089346

約数の個数: 32

約数和(自身を含む): 50480563392

約数和(自身を除く): 29479675422

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 643, 1286, 1929, 3215, 3858, 6430, 9645, 19290, 1088693, 2177386, 3266079, 5443465, 6532158, 10886930, 16330395, 32660790, 700029599, 1400059198, 2100088797, 3500147995, 4200177594, 7000295990, 10500443985, 21000887970]

約数ペア:

[(1, 21000887970), (2, 10500443985), (3, 7000295990), (5, 4200177594), (6, 3500147995), (10, 2100088797), (15, 1400059198), (30, 700029599), (643, 32660790), (1286, 16330395), (1929, 10886930), (3215, 6532158), (3858, 5443465), (6430, 3266079), (9645, 2177386), (19290, 1088693)]