42640325

素因数分解:

$5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{18743}}^1$

素因数の和:18773

約数の個数: 24

約数和(自身を含む): 65079168

約数和(自身を除く): 22438843

約数列:

[1, 5, 7, 13, 25, 35, 65, 91, 175, 325, 455, 2275, 18743, 93715, 131201, 243659, 468575, 656005, 1218295, 1705613, 3280025, 6091475, 8528065, 42640325]

約数ペア:

[(1, 42640325), (5, 8528065), (7, 6091475), (13, 3280025), (25, 1705613), (35, 1218295), (65, 656005), (91, 468575), (175, 243659), (325, 131201), (455, 93715), (2275, 18743)]