205651520

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{20731}}^1$

素因数の和:20779

約数の個数: 56

約数和(自身を含む): 505529088

約数和(自身を除く): 299877568

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2480, 4960, 9920, 20731, 41462, 82924, 103655, 165848, 207310, 331696, 414620, 642661, 663392, 829240, 1285322, 1326784, 1658480, 2570644, 3213305, 3316960, 5141288, 6426610, 6633920, 10282576, 12853220, 20565152, 25706440, 41130304, 51412880, 102825760, 205651520]

約数ペア:

[(1, 205651520), (2, 102825760), (4, 51412880), (5, 41130304), (8, 25706440), (10, 20565152), (16, 12853220), (20, 10282576), (31, 6633920), (32, 6426610), (40, 5141288), (62, 3316960), (64, 3213305), (80, 2570644), (124, 1658480), (155, 1326784), (160, 1285322), (248, 829240), (310, 663392), (320, 642661), (496, 414620), (620, 331696), (992, 207310), (1240, 165848), (1984, 103655), (2480, 82924), (4960, 41462), (9920, 20731)]