19701575

素因数分解:

$5^2\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{59}}^1$

素因数の和:144

約数の個数: 36

約数和(自身を含む): 26929080

約数和(自身を除く): 7227505

約数列:

[1, 5, 19, 25, 37, 59, 95, 185, 295, 361, 475, 703, 925, 1121, 1475, 1805, 2183, 3515, 5605, 9025, 10915, 13357, 17575, 21299, 28025, 41477, 54575, 66785, 106495, 207385, 333925, 532475, 788063, 1036925, 3940315, 19701575]

約数ペア:

[(1, 19701575), (5, 3940315), (19, 1036925), (25, 788063), (37, 532475), (59, 333925), (95, 207385), (185, 106495), (295, 66785), (361, 54575), (475, 41477), (703, 28025), (925, 21299), (1121, 17575), (1475, 13357), (1805, 10915), (2183, 9025), (3515, 5605)]