81780111

素因数分解:

$3^4\times 7^1\times {\mathrm{23}}^1\times {\mathrm{6271}}^1$

素因数の和:6313

約数の個数: 40

約数和(自身を含む): 145711104

約数和(自身を除く): 63930993

約数列:

[1, 3, 7, 9, 21, 23, 27, 63, 69, 81, 161, 189, 207, 483, 567, 621, 1449, 1863, 4347, 6271, 13041, 18813, 43897, 56439, 131691, 144233, 169317, 395073, 432699, 507951, 1009631, 1185219, 1298097, 3028893, 3555657, 3894291, 9086679, 11682873, 27260037, 81780111]

約数ペア:

[(1, 81780111), (3, 27260037), (7, 11682873), (9, 9086679), (21, 3894291), (23, 3555657), (27, 3028893), (63, 1298097), (69, 1185219), (81, 1009631), (161, 507951), (189, 432699), (207, 395073), (483, 169317), (567, 144233), (621, 131691), (1449, 56439), (1863, 43897), (4347, 18813), (6271, 13041)]