19725945

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{331}}^1$

素因数の和:505

約数の個数: 32

約数和(自身を含む): 32987520

約数和(自身を除く): 13261575

約数列:

[1, 3, 5, 15, 29, 87, 137, 145, 331, 411, 435, 685, 993, 1655, 2055, 3973, 4965, 9599, 11919, 19865, 28797, 45347, 47995, 59595, 136041, 143985, 226735, 680205, 1315063, 3945189, 6575315, 19725945]

約数ペア:

[(1, 19725945), (3, 6575315), (5, 3945189), (15, 1315063), (29, 680205), (87, 226735), (137, 143985), (145, 136041), (331, 59595), (411, 47995), (435, 45347), (685, 28797), (993, 19865), (1655, 11919), (2055, 9599), (3973, 4965)]