20677168

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4045

約数の個数: 40

約数和(自身を含む): 44662320

約数和(自身を除く): 23985152

約数列:

[1, 2, 4, 8, 16, 17, 19, 34, 38, 68, 76, 136, 152, 272, 304, 323, 646, 1292, 2584, 4001, 5168, 8002, 16004, 32008, 64016, 68017, 76019, 136034, 152038, 272068, 304076, 544136, 608152, 1088272, 1216304, 1292323, 2584646, 5169292, 10338584, 20677168]

約数ペア:

[(1, 20677168), (2, 10338584), (4, 5169292), (8, 2584646), (16, 1292323), (17, 1216304), (19, 1088272), (34, 608152), (38, 544136), (68, 304076), (76, 272068), (136, 152038), (152, 136034), (272, 76019), (304, 68017), (323, 64016), (646, 32008), (1292, 16004), (2584, 8002), (4001, 5168)]