20112156

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1$

素因数の和:643

約数の個数: 72

約数和(自身を含む): 54840240

約数和(自身を除く): 34728084

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 59, 68, 102, 118, 153, 177, 204, 236, 306, 354, 531, 557, 612, 708, 1003, 1062, 1114, 1671, 2006, 2124, 2228, 3009, 3342, 4012, 5013, 6018, 6684, 9027, 9469, 10026, 12036, 18054, 18938, 20052, 28407, 32863, 36108, 37876, 56814, 65726, 85221, 98589, 113628, 131452, 170442, 197178, 295767, 340884, 394356, 558671, 591534, 1117342, 1183068, 1676013, 2234684, 3352026, 5028039, 6704052, 10056078, 20112156]

約数ペア:

[(1, 20112156), (2, 10056078), (3, 6704052), (4, 5028039), (6, 3352026), (9, 2234684), (12, 1676013), (17, 1183068), (18, 1117342), (34, 591534), (36, 558671), (51, 394356), (59, 340884), (68, 295767), (102, 197178), (118, 170442), (153, 131452), (177, 113628), (204, 98589), (236, 85221), (306, 65726), (354, 56814), (531, 37876), (557, 36108), (612, 32863), (708, 28407), (1003, 20052), (1062, 18938), (1114, 18054), (1671, 12036), (2006, 10026), (2124, 9469), (2228, 9027), (3009, 6684), (3342, 6018), (4012, 5013)]