21225545

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{211}}^1$

素因数の和:317

約数の個数: 32

約数和(自身を含む): 29306880

約数和(自身を除く): 8081335

約数列:

[1, 5, 11, 31, 55, 59, 155, 211, 295, 341, 649, 1055, 1705, 1829, 2321, 3245, 6541, 9145, 11605, 12449, 20119, 32705, 62245, 71951, 100595, 136939, 359755, 385919, 684695, 1929595, 4245109, 21225545]

約数ペア:

[(1, 21225545), (5, 4245109), (11, 1929595), (31, 684695), (55, 385919), (59, 359755), (155, 136939), (211, 100595), (295, 71951), (341, 62245), (649, 32705), (1055, 20119), (1705, 12449), (1829, 11605), (2321, 9145), (3245, 6541)]