1990403709

素因数分解:

$3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{587}}^1\times {\mathrm{2647}}^1$

素因数の和:3305

約数の個数: 32

約数和(自身を含む): 3089135616

約数和(自身を除く): 1098731907

約数列:

[1, 3, 7, 21, 61, 183, 427, 587, 1281, 1761, 2647, 4109, 7941, 12327, 18529, 35807, 55587, 107421, 161467, 250649, 484401, 751947, 1130269, 1553789, 3390807, 4661367, 10876523, 32629569, 94781129, 284343387, 663467903, 1990403709]

約数ペア:

[(1, 1990403709), (3, 663467903), (7, 284343387), (21, 94781129), (61, 32629569), (183, 10876523), (427, 4661367), (587, 3390807), (1281, 1553789), (1761, 1130269), (2647, 751947), (4109, 484401), (7941, 250649), (12327, 161467), (18529, 107421), (35807, 55587)]