201721870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{11213}}^1$

素因数の和:11484

約数の個数: 32

約数和(自身を含む): 416622528

約数和(自身を除く): 214900658

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1285, 1799, 2570, 3598, 8995, 11213, 17990, 22426, 56065, 78491, 112130, 156982, 392455, 784910, 2881741, 5763482, 14408705, 20172187, 28817410, 40344374, 100860935, 201721870]

約数ペア:

[(1, 201721870), (2, 100860935), (5, 40344374), (7, 28817410), (10, 20172187), (14, 14408705), (35, 5763482), (70, 2881741), (257, 784910), (514, 392455), (1285, 156982), (1799, 112130), (2570, 78491), (3598, 56065), (8995, 22426), (11213, 17990)]