21473517

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{4019}}^1$

素因数の和:4172

約数の個数: 16

約数和(自身を含む): 31066560

約数和(自身を除く): 9593043

約数列:

[1, 3, 13, 39, 137, 411, 1781, 4019, 5343, 12057, 52247, 156741, 550603, 1651809, 7157839, 21473517]

約数ペア:

[(1, 21473517), (3, 7157839), (13, 1651809), (39, 550603), (137, 156741), (411, 52247), (1781, 12057), (4019, 5343)]