20172987172

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{79}}^1\times {\mathrm{499}}^1\times {\mathrm{757}}^1$

素因数の和:1365

約数の個数: 72

約数和(自身を含む): 38839920000

約数和(自身を除く): 18666932828

約数列:

[1, 2, 4, 13, 26, 52, 79, 158, 169, 316, 338, 499, 676, 757, 998, 1027, 1514, 1996, 2054, 3028, 4108, 6487, 9841, 12974, 13351, 19682, 25948, 26702, 39364, 39421, 53404, 59803, 78842, 84331, 119606, 127933, 157684, 168662, 239212, 255866, 337324, 377743, 511732, 512473, 755486, 777439, 1024946, 1510972, 1554878, 2049892, 3109756, 4910659, 6662149, 9821318, 10106707, 13324298, 19642636, 20213414, 26648596, 29841697, 40426828, 59683394, 63838567, 119366788, 127677134, 255354268, 387942061, 775884122, 1551768244, 5043246793, 10086493586, 20172987172]

約数ペア:

[(1, 20172987172), (2, 10086493586), (4, 5043246793), (13, 1551768244), (26, 775884122), (52, 387942061), (79, 255354268), (158, 127677134), (169, 119366788), (316, 63838567), (338, 59683394), (499, 40426828), (676, 29841697), (757, 26648596), (998, 20213414), (1027, 19642636), (1514, 13324298), (1996, 10106707), (2054, 9821318), (3028, 6662149), (4108, 4910659), (6487, 3109756), (9841, 2049892), (12974, 1554878), (13351, 1510972), (19682, 1024946), (25948, 777439), (26702, 755486), (39364, 512473), (39421, 511732), (53404, 377743), (59803, 337324), (78842, 255866), (84331, 239212), (119606, 168662), (127933, 157684)]