20537510

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 44651520

約数和(自身を除く): 24114010

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 58, 67, 70, 134, 145, 151, 203, 290, 302, 335, 406, 469, 670, 755, 938, 1015, 1057, 1510, 1943, 2030, 2114, 2345, 3886, 4379, 4690, 5285, 8758, 9715, 10117, 10570, 13601, 19430, 20234, 21895, 27202, 30653, 43790, 50585, 61306, 68005, 70819, 101170, 136010, 141638, 153265, 293393, 306530, 354095, 586786, 708190, 1466965, 2053751, 2933930, 4107502, 10268755, 20537510]

約数ペア:

[(1, 20537510), (2, 10268755), (5, 4107502), (7, 2933930), (10, 2053751), (14, 1466965), (29, 708190), (35, 586786), (58, 354095), (67, 306530), (70, 293393), (134, 153265), (145, 141638), (151, 136010), (203, 101170), (290, 70819), (302, 68005), (335, 61306), (406, 50585), (469, 43790), (670, 30653), (755, 27202), (938, 21895), (1015, 20234), (1057, 19430), (1510, 13601), (1943, 10570), (2030, 10117), (2114, 9715), (2345, 8758), (3886, 5285), (4379, 4690)]