20758380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{277}}^1\times {\mathrm{1249}}^1$

素因数の和:1538

約数の個数: 48

約数和(自身を含む): 58380000

約数和(自身を除く): 37621620

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 277, 554, 831, 1108, 1249, 1385, 1662, 2498, 2770, 3324, 3747, 4155, 4996, 5540, 6245, 7494, 8310, 12490, 14988, 16620, 18735, 24980, 37470, 74940, 345973, 691946, 1037919, 1383892, 1729865, 2075838, 3459730, 4151676, 5189595, 6919460, 10379190, 20758380]

約数ペア:

[(1, 20758380), (2, 10379190), (3, 6919460), (4, 5189595), (5, 4151676), (6, 3459730), (10, 2075838), (12, 1729865), (15, 1383892), (20, 1037919), (30, 691946), (60, 345973), (277, 74940), (554, 37470), (831, 24980), (1108, 18735), (1249, 16620), (1385, 14988), (1662, 12490), (2498, 8310), (2770, 7494), (3324, 6245), (3747, 5540), (4155, 4996)]