21919540

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{1559}}^1$

素因数の和:1624

約数の個数: 48

約数和(自身を含む): 49795200

約数和(自身を除く): 27875660

約数列:

[1, 2, 4, 5, 10, 19, 20, 37, 38, 74, 76, 95, 148, 185, 190, 370, 380, 703, 740, 1406, 1559, 2812, 3118, 3515, 6236, 7030, 7795, 14060, 15590, 29621, 31180, 57683, 59242, 115366, 118484, 148105, 230732, 288415, 296210, 576830, 592420, 1095977, 1153660, 2191954, 4383908, 5479885, 10959770, 21919540]

約数ペア:

[(1, 21919540), (2, 10959770), (4, 5479885), (5, 4383908), (10, 2191954), (19, 1153660), (20, 1095977), (37, 592420), (38, 576830), (74, 296210), (76, 288415), (95, 230732), (148, 148105), (185, 118484), (190, 115366), (370, 59242), (380, 57683), (703, 31180), (740, 29621), (1406, 15590), (1559, 14060), (2812, 7795), (3118, 7030), (3515, 6236)]