18657996

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{571}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 49969920

約数和(自身を除く): 31311924

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 389, 571, 778, 1142, 1167, 1556, 1713, 2284, 2334, 2723, 3426, 3997, 4668, 5446, 6852, 7994, 8169, 10892, 11991, 15988, 16338, 23982, 32676, 47964, 222119, 444238, 666357, 888476, 1332714, 1554833, 2665428, 3109666, 4664499, 6219332, 9328998, 18657996]

約数ペア:

[(1, 18657996), (2, 9328998), (3, 6219332), (4, 4664499), (6, 3109666), (7, 2665428), (12, 1554833), (14, 1332714), (21, 888476), (28, 666357), (42, 444238), (84, 222119), (389, 47964), (571, 32676), (778, 23982), (1142, 16338), (1167, 15988), (1556, 11991), (1713, 10892), (2284, 8169), (2334, 7994), (2723, 6852), (3426, 5446), (3997, 4668)]