40960520

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{139}}^2$

素因数の和:342

約数の個数: 48

約数和(自身を含む): 94580460

約数和(自身を除く): 53619940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 139, 212, 265, 278, 424, 530, 556, 695, 1060, 1112, 1390, 2120, 2780, 5560, 7367, 14734, 19321, 29468, 36835, 38642, 58936, 73670, 77284, 96605, 147340, 154568, 193210, 294680, 386420, 772840, 1024013, 2048026, 4096052, 5120065, 8192104, 10240130, 20480260, 40960520]

約数ペア:

[(1, 40960520), (2, 20480260), (4, 10240130), (5, 8192104), (8, 5120065), (10, 4096052), (20, 2048026), (40, 1024013), (53, 772840), (106, 386420), (139, 294680), (212, 193210), (265, 154568), (278, 147340), (424, 96605), (530, 77284), (556, 73670), (695, 58936), (1060, 38642), (1112, 36835), (1390, 29468), (2120, 19321), (2780, 14734), (5560, 7367)]