28385660

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1\times {\mathrm{431}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 62052480

約数和(自身を除く): 33666820

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 89, 148, 178, 185, 356, 370, 431, 445, 740, 862, 890, 1724, 1780, 2155, 3293, 4310, 6586, 8620, 13172, 15947, 16465, 31894, 32930, 38359, 63788, 65860, 76718, 79735, 153436, 159470, 191795, 318940, 383590, 767180, 1419283, 2838566, 5677132, 7096415, 14192830, 28385660]

約数ペア:

[(1, 28385660), (2, 14192830), (4, 7096415), (5, 5677132), (10, 2838566), (20, 1419283), (37, 767180), (74, 383590), (89, 318940), (148, 191795), (178, 159470), (185, 153436), (356, 79735), (370, 76718), (431, 65860), (445, 63788), (740, 38359), (862, 32930), (890, 31894), (1724, 16465), (1780, 15947), (2155, 13172), (3293, 8620), (4310, 6586)]