40691980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{290657}}^1$

素因数の和:290673

約数の個数: 24

約数和(自身を含む): 97661088

約数和(自身を除く): 56969108

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 290657, 581314, 1162628, 1453285, 2034599, 2906570, 4069198, 5813140, 8138396, 10172995, 20345990, 40691980]

約数ペア:

[(1, 40691980), (2, 20345990), (4, 10172995), (5, 8138396), (7, 5813140), (10, 4069198), (14, 2906570), (20, 2034599), (28, 1453285), (35, 1162628), (70, 581314), (140, 290657)]