19655984

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{1723}}^1$

素因数の和:1785

約数の個数: 40

約数和(自身を含む): 41044992

約数和(自身を除く): 21389008

約数列:

[1, 2, 4, 8, 16, 23, 31, 46, 62, 92, 124, 184, 248, 368, 496, 713, 1426, 1723, 2852, 3446, 5704, 6892, 11408, 13784, 27568, 39629, 53413, 79258, 106826, 158516, 213652, 317032, 427304, 634064, 854608, 1228499, 2456998, 4913996, 9827992, 19655984]

約数ペア:

[(1, 19655984), (2, 9827992), (4, 4913996), (8, 2456998), (16, 1228499), (23, 854608), (31, 634064), (46, 427304), (62, 317032), (92, 213652), (124, 158516), (184, 106826), (248, 79258), (368, 53413), (496, 39629), (713, 27568), (1426, 13784), (1723, 11408), (2852, 6892), (3446, 5704)]