128516855

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:240

約数の個数: 48

約数和(自身を含む): 179189760

約数和(自身を除く): 50672905

約数列:

[1, 5, 17, 19, 31, 85, 95, 151, 155, 289, 323, 527, 589, 755, 1445, 1615, 2567, 2635, 2869, 2945, 4681, 5491, 8959, 10013, 12835, 14345, 23405, 27455, 43639, 44795, 48773, 50065, 79577, 88939, 170221, 218195, 243865, 397885, 444695, 829141, 851105, 1352809, 1511963, 4145705, 6764045, 7559815, 25703371, 128516855]

約数ペア:

[(1, 128516855), (5, 25703371), (17, 7559815), (19, 6764045), (31, 4145705), (85, 1511963), (95, 1352809), (151, 851105), (155, 829141), (289, 444695), (323, 397885), (527, 243865), (589, 218195), (755, 170221), (1445, 88939), (1615, 79577), (2567, 50065), (2635, 48773), (2869, 44795), (2945, 43639), (4681, 27455), (5491, 23405), (8959, 14345), (10013, 12835)]