21718528

素因数分解:

$2^9\times {\mathrm{13}}^2\times {\mathrm{251}}^1$

素因数の和:295

約数の個数: 60

約数和(自身を含む): 47176668

約数和(自身を除く): 25458140

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 64, 104, 128, 169, 208, 251, 256, 338, 416, 502, 512, 676, 832, 1004, 1352, 1664, 2008, 2704, 3263, 3328, 4016, 5408, 6526, 6656, 8032, 10816, 13052, 16064, 21632, 26104, 32128, 42419, 43264, 52208, 64256, 84838, 86528, 104416, 128512, 169676, 208832, 339352, 417664, 678704, 835328, 1357408, 1670656, 2714816, 5429632, 10859264, 21718528]

約数ペア:

[(1, 21718528), (2, 10859264), (4, 5429632), (8, 2714816), (13, 1670656), (16, 1357408), (26, 835328), (32, 678704), (52, 417664), (64, 339352), (104, 208832), (128, 169676), (169, 128512), (208, 104416), (251, 86528), (256, 84838), (338, 64256), (416, 52208), (502, 43264), (512, 42419), (676, 32128), (832, 26104), (1004, 21632), (1352, 16064), (1664, 13052), (2008, 10816), (2704, 8032), (3263, 6656), (3328, 6526), (4016, 5408)]