18900973

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{229}}^1\times {\mathrm{907}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 23390080

約数和(自身を除く): 4489107

約数列:

[1, 7, 13, 91, 229, 907, 1603, 2977, 6349, 11791, 20839, 82537, 207703, 1453921, 2700139, 18900973]

約数ペア:

[(1, 18900973), (7, 2700139), (13, 1453921), (91, 207703), (229, 82537), (907, 20839), (1603, 11791), (2977, 6349)]