79171420

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1$

素因数の和:550

約数の個数: 48

約数和(自身を含む): 169995168

約数和(自身を除く): 90823748

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 211, 257, 292, 365, 422, 514, 730, 844, 1028, 1055, 1285, 1460, 2110, 2570, 4220, 5140, 15403, 18761, 30806, 37522, 54227, 61612, 75044, 77015, 93805, 108454, 154030, 187610, 216908, 271135, 308060, 375220, 542270, 1084540, 3958571, 7917142, 15834284, 19792855, 39585710, 79171420]

約数ペア:

[(1, 79171420), (2, 39585710), (4, 19792855), (5, 15834284), (10, 7917142), (20, 3958571), (73, 1084540), (146, 542270), (211, 375220), (257, 308060), (292, 271135), (365, 216908), (422, 187610), (514, 154030), (730, 108454), (844, 93805), (1028, 77015), (1055, 75044), (1285, 61612), (1460, 54227), (2110, 37522), (2570, 30806), (4220, 18761), (5140, 15403)]