251017880

素因数分解:

$2^3\times 5^1\times {\mathrm{157}}^1\times {\mathrm{39971}}^1$

素因数の和:40139

約数の個数: 32

約数和(自身を含む): 568401840

約数和(自身を除く): 317383960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 157, 314, 628, 785, 1256, 1570, 3140, 6280, 39971, 79942, 159884, 199855, 319768, 399710, 799420, 1598840, 6275447, 12550894, 25101788, 31377235, 50203576, 62754470, 125508940, 251017880]

約数ペア:

[(1, 251017880), (2, 125508940), (4, 62754470), (5, 50203576), (8, 31377235), (10, 25101788), (20, 12550894), (40, 6275447), (157, 1598840), (314, 799420), (628, 399710), (785, 319768), (1256, 199855), (1570, 159884), (3140, 79942), (6280, 39971)]