81668216

素因数分解:

$2^3\times 7^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1\times {\mathrm{389}}^1$

素因数の和:588

約数の個数: 64

約数和(自身を含む): 184204800

約数和(自身を除く): 102536584

約数列:

[1, 2, 4, 7, 8, 14, 23, 28, 46, 56, 92, 161, 163, 184, 322, 326, 389, 644, 652, 778, 1141, 1288, 1304, 1556, 2282, 2723, 3112, 3749, 4564, 5446, 7498, 8947, 9128, 10892, 14996, 17894, 21784, 26243, 29992, 35788, 52486, 62629, 63407, 71576, 104972, 125258, 126814, 209944, 250516, 253628, 443849, 501032, 507256, 887698, 1458361, 1775396, 2916722, 3550792, 5833444, 10208527, 11666888, 20417054, 40834108, 81668216]

約数ペア:

[(1, 81668216), (2, 40834108), (4, 20417054), (7, 11666888), (8, 10208527), (14, 5833444), (23, 3550792), (28, 2916722), (46, 1775396), (56, 1458361), (92, 887698), (161, 507256), (163, 501032), (184, 443849), (322, 253628), (326, 250516), (389, 209944), (644, 126814), (652, 125258), (778, 104972), (1141, 71576), (1288, 63407), (1304, 62629), (1556, 52486), (2282, 35788), (2723, 29992), (3112, 26243), (3749, 21784), (4564, 17894), (5446, 14996), (7498, 10892), (8947, 9128)]