8421335

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{131}}^1$

素因数の和:215

約数の個数: 32

約数和(自身を含む): 11708928

約数和(自身を除く): 3287593

約数列:

[1, 5, 13, 23, 43, 65, 115, 131, 215, 299, 559, 655, 989, 1495, 1703, 2795, 3013, 4945, 5633, 8515, 12857, 15065, 28165, 39169, 64285, 73229, 129559, 195845, 366145, 647795, 1684267, 8421335]

約数ペア:

[(1, 8421335), (5, 1684267), (13, 647795), (23, 366145), (43, 195845), (65, 129559), (115, 73229), (131, 64285), (215, 39169), (299, 28165), (559, 15065), (655, 12857), (989, 8515), (1495, 5633), (1703, 4945), (2795, 3013)]