20512960

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4931}}^1$

素因数の和:4961

約数の個数: 56

約数和(自身を含む): 52614576

約数和(自身を除く): 32101616

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4931, 9862, 19724, 24655, 39448, 49310, 64103, 78896, 98620, 128206, 157792, 197240, 256412, 315584, 320515, 394480, 512824, 641030, 788960, 1025648, 1282060, 1577920, 2051296, 2564120, 4102592, 5128240, 10256480, 20512960]

約数ペア:

[(1, 20512960), (2, 10256480), (4, 5128240), (5, 4102592), (8, 2564120), (10, 2051296), (13, 1577920), (16, 1282060), (20, 1025648), (26, 788960), (32, 641030), (40, 512824), (52, 394480), (64, 320515), (65, 315584), (80, 256412), (104, 197240), (130, 157792), (160, 128206), (208, 98620), (260, 78896), (320, 64103), (416, 49310), (520, 39448), (832, 24655), (1040, 19724), (2080, 9862), (4160, 4931)]