128950900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{281}}^1\times {\mathrm{353}}^1$

素因数の和:661

約数の個数: 72

約数和(自身を含む): 303277464

約数和(自身を除く): 174326564

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 281, 325, 353, 562, 650, 706, 1124, 1300, 1405, 1412, 1765, 2810, 3530, 3653, 4589, 5620, 7025, 7060, 7306, 8825, 9178, 14050, 14612, 17650, 18265, 18356, 22945, 28100, 35300, 36530, 45890, 73060, 91325, 91780, 99193, 114725, 182650, 198386, 229450, 365300, 396772, 458900, 495965, 991930, 1289509, 1983860, 2479825, 2579018, 4959650, 5158036, 6447545, 9919300, 12895090, 25790180, 32237725, 64475450, 128950900]

約数ペア:

[(1, 128950900), (2, 64475450), (4, 32237725), (5, 25790180), (10, 12895090), (13, 9919300), (20, 6447545), (25, 5158036), (26, 4959650), (50, 2579018), (52, 2479825), (65, 1983860), (100, 1289509), (130, 991930), (260, 495965), (281, 458900), (325, 396772), (353, 365300), (562, 229450), (650, 198386), (706, 182650), (1124, 114725), (1300, 99193), (1405, 91780), (1412, 91325), (1765, 73060), (2810, 45890), (3530, 36530), (3653, 35300), (4589, 28100), (5620, 22945), (7025, 18356), (7060, 18265), (7306, 17650), (8825, 14612), (9178, 14050)]