21053552

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{797}}^1$

素因数の和:945

約数の個数: 40

約数和(自身を含む): 44330496

約数和(自身を除く): 23276944

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 127, 208, 254, 508, 797, 1016, 1594, 1651, 2032, 3188, 3302, 6376, 6604, 10361, 12752, 13208, 20722, 26416, 41444, 82888, 101219, 165776, 202438, 404876, 809752, 1315847, 1619504, 2631694, 5263388, 10526776, 21053552]

約数ペア:

[(1, 21053552), (2, 10526776), (4, 5263388), (8, 2631694), (13, 1619504), (16, 1315847), (26, 809752), (52, 404876), (104, 202438), (127, 165776), (208, 101219), (254, 82888), (508, 41444), (797, 26416), (1016, 20722), (1594, 13208), (1651, 12752), (2032, 10361), (3188, 6604), (3302, 6376)]