21142784

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{6353}}^1$

素因数の和:6382

約数の個数: 36

約数和(自身を含む): 45456516

約数和(自身を除く): 24313732

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 208, 256, 416, 832, 1664, 3328, 6353, 12706, 25412, 50824, 82589, 101648, 165178, 203296, 330356, 406592, 660712, 813184, 1321424, 1626368, 2642848, 5285696, 10571392, 21142784]

約数ペア:

[(1, 21142784), (2, 10571392), (4, 5285696), (8, 2642848), (13, 1626368), (16, 1321424), (26, 813184), (32, 660712), (52, 406592), (64, 330356), (104, 203296), (128, 165178), (208, 101648), (256, 82589), (416, 50824), (832, 25412), (1664, 12706), (3328, 6353)]