28780325

素因数分解:

$5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 43390080

約数和(自身を除く): 14609755

約数列:

[1, 5, 7, 25, 29, 35, 53, 107, 145, 175, 203, 265, 371, 535, 725, 749, 1015, 1325, 1537, 1855, 2675, 3103, 3745, 5075, 5671, 7685, 9275, 10759, 15515, 18725, 21721, 28355, 38425, 39697, 53795, 77575, 108605, 141775, 164459, 198485, 268975, 543025, 822295, 992425, 1151213, 4111475, 5756065, 28780325]

約数ペア:

[(1, 28780325), (5, 5756065), (7, 4111475), (25, 1151213), (29, 992425), (35, 822295), (53, 543025), (107, 268975), (145, 198485), (175, 164459), (203, 141775), (265, 108605), (371, 77575), (535, 53795), (725, 39697), (749, 38425), (1015, 28355), (1325, 21721), (1537, 18725), (1855, 15515), (2675, 10759), (3103, 9275), (3745, 7685), (5075, 5671)]