21069240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{337}}^1\times {\mathrm{521}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 63516960

約数和(自身を除く): 42447720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 337, 521, 674, 1011, 1042, 1348, 1563, 1685, 2022, 2084, 2605, 2696, 3126, 3370, 4044, 4168, 5055, 5210, 6252, 6740, 7815, 8088, 10110, 10420, 12504, 13480, 15630, 20220, 20840, 31260, 40440, 62520, 175577, 351154, 526731, 702308, 877885, 1053462, 1404616, 1755770, 2106924, 2633655, 3511540, 4213848, 5267310, 7023080, 10534620, 21069240]

約数ペア:

[(1, 21069240), (2, 10534620), (3, 7023080), (4, 5267310), (5, 4213848), (6, 3511540), (8, 2633655), (10, 2106924), (12, 1755770), (15, 1404616), (20, 1053462), (24, 877885), (30, 702308), (40, 526731), (60, 351154), (120, 175577), (337, 62520), (521, 40440), (674, 31260), (1011, 20840), (1042, 20220), (1348, 15630), (1563, 13480), (1685, 12504), (2022, 10420), (2084, 10110), (2605, 8088), (2696, 7815), (3126, 6740), (3370, 6252), (4044, 5210), (4168, 5055)]