19737640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37957}}^1$

素因数の和:37981

約数の個数: 32

約数和(自身を含む): 47827080

約数和(自身を除く): 28089440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 37957, 75914, 151828, 189785, 303656, 379570, 493441, 759140, 986882, 1518280, 1973764, 2467205, 3947528, 4934410, 9868820, 19737640]

約数ペア:

[(1, 19737640), (2, 9868820), (4, 4934410), (5, 3947528), (8, 2467205), (10, 1973764), (13, 1518280), (20, 986882), (26, 759140), (40, 493441), (52, 379570), (65, 303656), (104, 189785), (130, 151828), (260, 75914), (520, 37957)]