31020327

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{331}}^1$

素因数の和:445

約数の個数: 40

約数和(自身を含む): 50616720

約数和(自身を除く): 19596393

約数列:

[1, 3, 9, 13, 27, 39, 81, 89, 117, 267, 331, 351, 801, 993, 1053, 1157, 2403, 2979, 3471, 4303, 7209, 8937, 10413, 12909, 26811, 29459, 31239, 38727, 88377, 93717, 116181, 265131, 348543, 382967, 795393, 1148901, 2386179, 3446703, 10340109, 31020327]

約数ペア:

[(1, 31020327), (3, 10340109), (9, 3446703), (13, 2386179), (27, 1148901), (39, 795393), (81, 382967), (89, 348543), (117, 265131), (267, 116181), (331, 93717), (351, 88377), (801, 38727), (993, 31239), (1053, 29459), (1157, 26811), (2403, 12909), (2979, 10413), (3471, 8937), (4303, 7209)]