19724715

素因数分解:

$3^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{431}}^1$

素因数の和:561

約数の個数: 40

約数和(自身を含む): 35754048

約数和(自身を除く): 16029333

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 113, 135, 339, 405, 431, 565, 1017, 1293, 1695, 2155, 3051, 3879, 5085, 6465, 9153, 11637, 15255, 19395, 34911, 45765, 48703, 58185, 146109, 174555, 243515, 438327, 730545, 1314981, 2191635, 3944943, 6574905, 19724715]

約数ペア:

[(1, 19724715), (3, 6574905), (5, 3944943), (9, 2191635), (15, 1314981), (27, 730545), (45, 438327), (81, 243515), (113, 174555), (135, 146109), (339, 58185), (405, 48703), (431, 45765), (565, 34911), (1017, 19395), (1293, 15255), (1695, 11637), (2155, 9153), (3051, 6465), (3879, 5085)]