21372129

素因数分解:

$3^2\times {\mathrm{23}}^2\times {\mathrm{67}}^2$

素因数の和:186

約数の個数: 27

約数和(自身を含む): 32760273

約数和(自身を除く): 11388144

約数列:

[1, 3, 9, 23, 67, 69, 201, 207, 529, 603, 1541, 1587, 4489, 4623, 4761, 13467, 13869, 35443, 40401, 103247, 106329, 309741, 318987, 929223, 2374681, 7124043, 21372129]

約数ペア:

[(1, 21372129), (3, 7124043), (9, 2374681), (23, 929223), (67, 318987), (69, 309741), (201, 106329), (207, 103247), (529, 40401), (603, 35443), (1541, 13869), (1587, 13467), (4489, 4761)]