13778968040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{661}}^1\times {\mathrm{16811}}^1$

素因数の和:17514

約数の個数: 64

約数和(自身を含む): 32053086720

約数和(自身を除く): 18274118680

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 661, 1240, 1322, 2644, 3305, 5288, 6610, 13220, 16811, 20491, 26440, 33622, 40982, 67244, 81964, 84055, 102455, 134488, 163928, 168110, 204910, 336220, 409820, 521141, 672440, 819640, 1042282, 2084564, 2605705, 4169128, 5211410, 10422820, 11112071, 20845640, 22224142, 44448284, 55560355, 88896568, 111120710, 222241420, 344474201, 444482840, 688948402, 1377896804, 1722371005, 2755793608, 3444742010, 6889484020, 13778968040]

約数ペア:

[(1, 13778968040), (2, 6889484020), (4, 3444742010), (5, 2755793608), (8, 1722371005), (10, 1377896804), (20, 688948402), (31, 444482840), (40, 344474201), (62, 222241420), (124, 111120710), (155, 88896568), (248, 55560355), (310, 44448284), (620, 22224142), (661, 20845640), (1240, 11112071), (1322, 10422820), (2644, 5211410), (3305, 4169128), (5288, 2605705), (6610, 2084564), (13220, 1042282), (16811, 819640), (20491, 672440), (26440, 521141), (33622, 409820), (40982, 336220), (67244, 204910), (81964, 168110), (84055, 163928), (102455, 134488)]