21478659839

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1\times {\mathrm{24697}}^1$

素因数の和:25239

約数の個数: 32

約数和(自身を含む): 27883054080

約数和(自身を除く): 6404394241

約数列:

[1, 7, 13, 19, 91, 133, 247, 503, 1729, 3521, 6539, 9557, 24697, 45773, 66899, 124241, 172879, 321061, 469243, 869687, 2247427, 3284701, 6100159, 12422591, 42701113, 86958137, 161493683, 236029229, 1130455781, 1652204603, 3068379977, 21478659839]

約数ペア:

[(1, 21478659839), (7, 3068379977), (13, 1652204603), (19, 1130455781), (91, 236029229), (133, 161493683), (247, 86958137), (503, 42701113), (1729, 12422591), (3521, 6100159), (6539, 3284701), (9557, 2247427), (24697, 869687), (45773, 469243), (66899, 321061), (124241, 172879)]