21953295

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1787}}^1$

素因数の和:1821

約数の個数: 64

約数和(自身を含む): 48061440

約数和(自身を除く): 26108145

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1755, 1787, 2457, 4095, 5361, 8935, 12285, 12509, 16083, 23231, 26805, 37527, 48249, 62545, 69693, 80415, 112581, 116155, 162617, 187635, 209079, 241245, 337743, 348465, 487851, 562905, 627237, 813085, 1045395, 1463553, 1688715, 2439255, 3136185, 4390659, 7317765, 21953295]

約数ペア:

[(1, 21953295), (3, 7317765), (5, 4390659), (7, 3136185), (9, 2439255), (13, 1688715), (15, 1463553), (21, 1045395), (27, 813085), (35, 627237), (39, 562905), (45, 487851), (63, 348465), (65, 337743), (91, 241245), (105, 209079), (117, 187635), (135, 162617), (189, 116155), (195, 112581), (273, 80415), (315, 69693), (351, 62545), (455, 48249), (585, 37527), (819, 26805), (945, 23231), (1365, 16083), (1755, 12509), (1787, 12285), (2457, 8935), (4095, 5361)]