21155460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{3491}}^1$

素因数の和:3604

約数の個数: 48

約数和(自身を含む): 59838912

約数和(自身を除く): 38683452

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 101, 202, 303, 404, 505, 606, 1010, 1212, 1515, 2020, 3030, 3491, 6060, 6982, 10473, 13964, 17455, 20946, 34910, 41892, 52365, 69820, 104730, 209460, 352591, 705182, 1057773, 1410364, 1762955, 2115546, 3525910, 4231092, 5288865, 7051820, 10577730, 21155460]

約数ペア:

[(1, 21155460), (2, 10577730), (3, 7051820), (4, 5288865), (5, 4231092), (6, 3525910), (10, 2115546), (12, 1762955), (15, 1410364), (20, 1057773), (30, 705182), (60, 352591), (101, 209460), (202, 104730), (303, 69820), (404, 52365), (505, 41892), (606, 34910), (1010, 20946), (1212, 17455), (1515, 13964), (2020, 10473), (3030, 6982), (3491, 6060)]