20196420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{823}}^1$

素因数の和:1244

約数の個数: 48

約数和(自身を含む): 56757120

約数和(自身を除く): 36560700

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 409, 818, 823, 1227, 1636, 1646, 2045, 2454, 2469, 3292, 4090, 4115, 4908, 4938, 6135, 8180, 8230, 9876, 12270, 12345, 16460, 24540, 24690, 49380, 336607, 673214, 1009821, 1346428, 1683035, 2019642, 3366070, 4039284, 5049105, 6732140, 10098210, 20196420]

約数ペア:

[(1, 20196420), (2, 10098210), (3, 6732140), (4, 5049105), (5, 4039284), (6, 3366070), (10, 2019642), (12, 1683035), (15, 1346428), (20, 1009821), (30, 673214), (60, 336607), (409, 49380), (818, 24690), (823, 24540), (1227, 16460), (1636, 12345), (1646, 12270), (2045, 9876), (2454, 8230), (2469, 8180), (3292, 6135), (4090, 4938), (4115, 4908)]