21072656

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{7043}}^1$

素因数の和:7079

約数の個数: 40

約数和(自身を含む): 47166624

約数和(自身を除く): 26093968

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 34, 44, 68, 88, 136, 176, 187, 272, 374, 748, 1496, 2992, 7043, 14086, 28172, 56344, 77473, 112688, 119731, 154946, 239462, 309892, 478924, 619784, 957848, 1239568, 1317041, 1915696, 2634082, 5268164, 10536328, 21072656]

約数ペア:

[(1, 21072656), (2, 10536328), (4, 5268164), (8, 2634082), (11, 1915696), (16, 1317041), (17, 1239568), (22, 957848), (34, 619784), (44, 478924), (68, 309892), (88, 239462), (136, 154946), (176, 119731), (187, 112688), (272, 77473), (374, 56344), (748, 28172), (1496, 14086), (2992, 7043)]