77821640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{1373}}^1$

素因数の和:1506

約数の個数: 64

約数和(自身を含む): 190436400

約数和(自身を除く): 112614760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 436, 520, 545, 872, 1090, 1373, 1417, 2180, 2746, 2834, 4360, 5492, 5668, 6865, 7085, 10984, 11336, 13730, 14170, 17849, 27460, 28340, 35698, 54920, 56680, 71396, 89245, 142792, 149657, 178490, 299314, 356980, 598628, 713960, 748285, 1197256, 1496570, 1945541, 2993140, 3891082, 5986280, 7782164, 9727705, 15564328, 19455410, 38910820, 77821640]

約数ペア:

[(1, 77821640), (2, 38910820), (4, 19455410), (5, 15564328), (8, 9727705), (10, 7782164), (13, 5986280), (20, 3891082), (26, 2993140), (40, 1945541), (52, 1496570), (65, 1197256), (104, 748285), (109, 713960), (130, 598628), (218, 356980), (260, 299314), (436, 178490), (520, 149657), (545, 142792), (872, 89245), (1090, 71396), (1373, 56680), (1417, 54920), (2180, 35698), (2746, 28340), (2834, 27460), (4360, 17849), (5492, 14170), (5668, 13730), (6865, 11336), (7085, 10984)]