21731190

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55721}}^1$

素因数の和:55744

約数の個数: 32

約数和(自身を含む): 56167776

約数和(自身を除く): 34436586

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55721, 111442, 167163, 278605, 334326, 557210, 724373, 835815, 1448746, 1671630, 2173119, 3621865, 4346238, 7243730, 10865595, 21731190]

約数ペア:

[(1, 21731190), (2, 10865595), (3, 7243730), (5, 4346238), (6, 3621865), (10, 2173119), (13, 1671630), (15, 1448746), (26, 835815), (30, 724373), (39, 557210), (65, 334326), (78, 278605), (130, 167163), (195, 111442), (390, 55721)]