20185992

素因数分解:

$2^3\times 3^2\times {\mathrm{491}}^1\times {\mathrm{571}}^1$

素因数の和:1074

約数の個数: 48

約数和(自身を含む): 54877680

約数和(自身を除く): 34691688

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 491, 571, 982, 1142, 1473, 1713, 1964, 2284, 2946, 3426, 3928, 4419, 4568, 5139, 5892, 6852, 8838, 10278, 11784, 13704, 17676, 20556, 35352, 41112, 280361, 560722, 841083, 1121444, 1682166, 2242888, 2523249, 3364332, 5046498, 6728664, 10092996, 20185992]

約数ペア:

[(1, 20185992), (2, 10092996), (3, 6728664), (4, 5046498), (6, 3364332), (8, 2523249), (9, 2242888), (12, 1682166), (18, 1121444), (24, 841083), (36, 560722), (72, 280361), (491, 41112), (571, 35352), (982, 20556), (1142, 17676), (1473, 13704), (1713, 11784), (1964, 10278), (2284, 8838), (2946, 6852), (3426, 5892), (3928, 5139), (4419, 4568)]