20173580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1399}}^1$

素因数の和:1518

約数の個数: 48

約数和(自身を含む): 48921600

約数和(自身を除く): 28748020

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 103, 140, 206, 412, 515, 721, 1030, 1399, 1442, 2060, 2798, 2884, 3605, 5596, 6995, 7210, 9793, 13990, 14420, 19586, 27980, 39172, 48965, 97930, 144097, 195860, 288194, 576388, 720485, 1008679, 1440970, 2017358, 2881940, 4034716, 5043395, 10086790, 20173580]

約数ペア:

[(1, 20173580), (2, 10086790), (4, 5043395), (5, 4034716), (7, 2881940), (10, 2017358), (14, 1440970), (20, 1008679), (28, 720485), (35, 576388), (70, 288194), (103, 195860), (140, 144097), (206, 97930), (412, 48965), (515, 39172), (721, 27980), (1030, 19586), (1399, 14420), (1442, 13990), (2060, 9793), (2798, 7210), (2884, 6995), (3605, 5596)]