28157925

素因数分解:

$3^1\times 5^2\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{139}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 48816320

約数和(自身を除く): 20658395

約数列:

[1, 3, 5, 15, 25, 37, 73, 75, 111, 139, 185, 219, 365, 417, 555, 695, 925, 1095, 1825, 2085, 2701, 2775, 3475, 5143, 5475, 8103, 10147, 10425, 13505, 15429, 25715, 30441, 40515, 50735, 67525, 77145, 128575, 152205, 202575, 253675, 375439, 385725, 761025, 1126317, 1877195, 5631585, 9385975, 28157925]

約数ペア:

[(1, 28157925), (3, 9385975), (5, 5631585), (15, 1877195), (25, 1126317), (37, 761025), (73, 385725), (75, 375439), (111, 253675), (139, 202575), (185, 152205), (219, 128575), (365, 77145), (417, 67525), (555, 50735), (695, 40515), (925, 30441), (1095, 25715), (1825, 15429), (2085, 13505), (2701, 10425), (2775, 10147), (3475, 8103), (5143, 5475)]