28742728

素因数分解:

$2^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1\times {\mathrm{89}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 63936000

約数和(自身を除く): 35193272

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 73, 79, 89, 146, 158, 178, 292, 316, 356, 511, 553, 584, 623, 632, 712, 1022, 1106, 1246, 2044, 2212, 2492, 4088, 4424, 4984, 5767, 6497, 7031, 11534, 12994, 14062, 23068, 25988, 28124, 40369, 45479, 46136, 49217, 51976, 56248, 80738, 90958, 98434, 161476, 181916, 196868, 322952, 363832, 393736, 513263, 1026526, 2053052, 3592841, 4106104, 7185682, 14371364, 28742728]

約数ペア:

[(1, 28742728), (2, 14371364), (4, 7185682), (7, 4106104), (8, 3592841), (14, 2053052), (28, 1026526), (56, 513263), (73, 393736), (79, 363832), (89, 322952), (146, 196868), (158, 181916), (178, 161476), (292, 98434), (316, 90958), (356, 80738), (511, 56248), (553, 51976), (584, 49217), (623, 46136), (632, 45479), (712, 40369), (1022, 28124), (1106, 25988), (1246, 23068), (2044, 14062), (2212, 12994), (2492, 11534), (4088, 7031), (4424, 6497), (4984, 5767)]