20771838

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{571}}^1$

素因数の和:669

約数の個数: 48

約数和(自身を含む): 47114496

約数和(自身を除く): 26342658

約数列:

[1, 2, 3, 6, 9, 18, 43, 47, 86, 94, 129, 141, 258, 282, 387, 423, 571, 774, 846, 1142, 1713, 2021, 3426, 4042, 5139, 6063, 10278, 12126, 18189, 24553, 26837, 36378, 49106, 53674, 73659, 80511, 147318, 161022, 220977, 241533, 441954, 483066, 1153991, 2307982, 3461973, 6923946, 10385919, 20771838]

約数ペア:

[(1, 20771838), (2, 10385919), (3, 6923946), (6, 3461973), (9, 2307982), (18, 1153991), (43, 483066), (47, 441954), (86, 241533), (94, 220977), (129, 161022), (141, 147318), (258, 80511), (282, 73659), (387, 53674), (423, 49106), (571, 36378), (774, 26837), (846, 24553), (1142, 18189), (1713, 12126), (2021, 10278), (3426, 6063), (4042, 5139)]