388670685

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{419}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 690923520

約数和(自身を除く): 302252835

約数列:

[1, 3, 5, 13, 15, 39, 65, 67, 71, 195, 201, 213, 335, 355, 419, 871, 923, 1005, 1065, 1257, 2095, 2613, 2769, 4355, 4615, 4757, 5447, 6285, 13065, 13845, 14271, 16341, 23785, 27235, 28073, 29749, 61841, 71355, 81705, 84219, 89247, 140365, 148745, 185523, 309205, 364949, 386737, 421095, 446235, 927615, 1094847, 1160211, 1824745, 1933685, 1993183, 5474235, 5801055, 5979549, 9965915, 25911379, 29897745, 77734137, 129556895, 388670685]

約数ペア:

[(1, 388670685), (3, 129556895), (5, 77734137), (13, 29897745), (15, 25911379), (39, 9965915), (65, 5979549), (67, 5801055), (71, 5474235), (195, 1993183), (201, 1933685), (213, 1824745), (335, 1160211), (355, 1094847), (419, 927615), (871, 446235), (923, 421095), (1005, 386737), (1065, 364949), (1257, 309205), (2095, 185523), (2613, 148745), (2769, 140365), (4355, 89247), (4615, 84219), (4757, 81705), (5447, 71355), (6285, 61841), (13065, 29749), (13845, 28073), (14271, 27235), (16341, 23785)]