20817390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{199}}^1\times {\mathrm{317}}^1$

素因数の和:537

約数の個数: 64

約数和(自身を含む): 54950400

約数和(自身を除く): 34133010

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 199, 317, 330, 398, 597, 634, 951, 995, 1194, 1585, 1902, 1990, 2189, 2985, 3170, 3487, 4378, 4755, 5970, 6567, 6974, 9510, 10461, 10945, 13134, 17435, 20922, 21890, 32835, 34870, 52305, 63083, 65670, 104610, 126166, 189249, 315415, 378498, 630830, 693913, 946245, 1387826, 1892490, 2081739, 3469565, 4163478, 6939130, 10408695, 20817390]

約数ペア:

[(1, 20817390), (2, 10408695), (3, 6939130), (5, 4163478), (6, 3469565), (10, 2081739), (11, 1892490), (15, 1387826), (22, 946245), (30, 693913), (33, 630830), (55, 378498), (66, 315415), (110, 189249), (165, 126166), (199, 104610), (317, 65670), (330, 63083), (398, 52305), (597, 34870), (634, 32835), (951, 21890), (995, 20922), (1194, 17435), (1585, 13134), (1902, 10945), (1990, 10461), (2189, 9510), (2985, 6974), (3170, 6567), (3487, 5970), (4378, 4755)]