90987500

素因数分解:

$2^2\times 5^5\times {\mathrm{29}}^1\times {\mathrm{251}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 206705520

約数和(自身を除く): 115718020

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 145, 250, 251, 290, 500, 502, 580, 625, 725, 1004, 1250, 1255, 1450, 2500, 2510, 2900, 3125, 3625, 5020, 6250, 6275, 7250, 7279, 12500, 12550, 14500, 14558, 18125, 25100, 29116, 31375, 36250, 36395, 62750, 72500, 72790, 90625, 125500, 145580, 156875, 181250, 181975, 313750, 362500, 363950, 627500, 727900, 784375, 909875, 1568750, 1819750, 3137500, 3639500, 4549375, 9098750, 18197500, 22746875, 45493750, 90987500]

約数ペア:

[(1, 90987500), (2, 45493750), (4, 22746875), (5, 18197500), (10, 9098750), (20, 4549375), (25, 3639500), (29, 3137500), (50, 1819750), (58, 1568750), (100, 909875), (116, 784375), (125, 727900), (145, 627500), (250, 363950), (251, 362500), (290, 313750), (500, 181975), (502, 181250), (580, 156875), (625, 145580), (725, 125500), (1004, 90625), (1250, 72790), (1255, 72500), (1450, 62750), (2500, 36395), (2510, 36250), (2900, 31375), (3125, 29116), (3625, 25100), (5020, 18125), (6250, 14558), (6275, 14500), (7250, 12550), (7279, 12500)]