20287501900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{313}}^1\times {\mathrm{28181}}^1$

素因数の和:28531

約数の個数: 72

約数和(自身を含む): 46086362784

約数和(自身を除く): 25798860884

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 230, 313, 460, 575, 626, 1150, 1252, 1565, 2300, 3130, 6260, 7199, 7825, 14398, 15650, 28181, 28796, 31300, 35995, 56362, 71990, 112724, 140905, 143980, 179975, 281810, 359950, 563620, 648163, 704525, 719900, 1296326, 1409050, 2592652, 2818100, 3240815, 6481630, 8820653, 12963260, 16204075, 17641306, 32408150, 35282612, 44103265, 64816300, 88206530, 176413060, 202875019, 220516325, 405750038, 441032650, 811500076, 882065300, 1014375095, 2028750190, 4057500380, 5071875475, 10143750950, 20287501900]

約数ペア:

[(1, 20287501900), (2, 10143750950), (4, 5071875475), (5, 4057500380), (10, 2028750190), (20, 1014375095), (23, 882065300), (25, 811500076), (46, 441032650), (50, 405750038), (92, 220516325), (100, 202875019), (115, 176413060), (230, 88206530), (313, 64816300), (460, 44103265), (575, 35282612), (626, 32408150), (1150, 17641306), (1252, 16204075), (1565, 12963260), (2300, 8820653), (3130, 6481630), (6260, 3240815), (7199, 2818100), (7825, 2592652), (14398, 1409050), (15650, 1296326), (28181, 719900), (28796, 704525), (31300, 648163), (35995, 563620), (56362, 359950), (71990, 281810), (112724, 179975), (140905, 143980)]