20880352

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{293}}^1$

素因数の和:451

約数の個数: 48

約数和(自身を含む): 44008272

約数和(自身を除く): 23127920

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 131, 136, 262, 272, 293, 524, 544, 586, 1048, 1172, 2096, 2227, 2344, 4192, 4454, 4688, 4981, 8908, 9376, 9962, 17816, 19924, 35632, 38383, 39848, 71264, 76766, 79696, 153532, 159392, 307064, 614128, 652511, 1228256, 1305022, 2610044, 5220088, 10440176, 20880352]

約数ペア:

[(1, 20880352), (2, 10440176), (4, 5220088), (8, 2610044), (16, 1305022), (17, 1228256), (32, 652511), (34, 614128), (68, 307064), (131, 159392), (136, 153532), (262, 79696), (272, 76766), (293, 71264), (524, 39848), (544, 38383), (586, 35632), (1048, 19924), (1172, 17816), (2096, 9962), (2227, 9376), (2344, 8908), (4192, 4981), (4454, 4688)]