31578393

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{331}}^1$

素因数の和:418

約数の個数: 48

約数和(自身を含む): 54501120

約数和(自身を除く): 22922727

約数列:

[1, 3, 7, 11, 21, 33, 49, 59, 77, 147, 177, 231, 331, 413, 539, 649, 993, 1239, 1617, 1947, 2317, 2891, 3641, 4543, 6951, 8673, 10923, 13629, 16219, 19529, 25487, 31801, 48657, 58587, 76461, 95403, 136703, 178409, 214819, 410109, 535227, 644457, 956921, 1503733, 2870763, 4511199, 10526131, 31578393]

約数ペア:

[(1, 31578393), (3, 10526131), (7, 4511199), (11, 2870763), (21, 1503733), (33, 956921), (49, 644457), (59, 535227), (77, 410109), (147, 214819), (177, 178409), (231, 136703), (331, 95403), (413, 76461), (539, 58587), (649, 48657), (993, 31801), (1239, 25487), (1617, 19529), (1947, 16219), (2317, 13629), (2891, 10923), (3641, 8673), (4543, 6951)]