28891408

素因数分解:

$2^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19843}}^1$

素因数の和:19871

約数の個数: 40

約数和(自身を含む): 68898368

約数和(自身を除く): 40006960

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 52, 56, 91, 104, 112, 182, 208, 364, 728, 1456, 19843, 39686, 79372, 138901, 158744, 257959, 277802, 317488, 515918, 555604, 1031836, 1111208, 1805713, 2063672, 2222416, 3611426, 4127344, 7222852, 14445704, 28891408]

約数ペア:

[(1, 28891408), (2, 14445704), (4, 7222852), (7, 4127344), (8, 3611426), (13, 2222416), (14, 2063672), (16, 1805713), (26, 1111208), (28, 1031836), (52, 555604), (56, 515918), (91, 317488), (104, 277802), (112, 257959), (182, 158744), (208, 138901), (364, 79372), (728, 39686), (1456, 19843)]