19783984

素因数分解:

$2^4\times {\mathrm{11}}^3\times {\mathrm{929}}^1$

素因数の和:970

約数の個数: 40

約数和(自身を含む): 42207120

約数和(自身を除く): 22423136

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 121, 176, 242, 484, 929, 968, 1331, 1858, 1936, 2662, 3716, 5324, 7432, 10219, 10648, 14864, 20438, 21296, 40876, 81752, 112409, 163504, 224818, 449636, 899272, 1236499, 1798544, 2472998, 4945996, 9891992, 19783984]

約数ペア:

[(1, 19783984), (2, 9891992), (4, 4945996), (8, 2472998), (11, 1798544), (16, 1236499), (22, 899272), (44, 449636), (88, 224818), (121, 163504), (176, 112409), (242, 81752), (484, 40876), (929, 21296), (968, 20438), (1331, 14864), (1858, 10648), (1936, 10219), (2662, 7432), (3716, 5324)]