19312980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{787}}^1$

素因数の和:1208

約数の個数: 48

約数和(自身を含む): 54277440

約数和(自身を除く): 34964460

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 409, 787, 818, 1227, 1574, 1636, 2045, 2361, 2454, 3148, 3935, 4090, 4722, 4908, 6135, 7870, 8180, 9444, 11805, 12270, 15740, 23610, 24540, 47220, 321883, 643766, 965649, 1287532, 1609415, 1931298, 3218830, 3862596, 4828245, 6437660, 9656490, 19312980]

約数ペア:

[(1, 19312980), (2, 9656490), (3, 6437660), (4, 4828245), (5, 3862596), (6, 3218830), (10, 1931298), (12, 1609415), (15, 1287532), (20, 965649), (30, 643766), (60, 321883), (409, 47220), (787, 24540), (818, 23610), (1227, 15740), (1574, 12270), (1636, 11805), (2045, 9444), (2361, 8180), (2454, 7870), (3148, 6135), (3935, 4908), (4090, 4722)]