28245860

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{107}}^1\times {\mathrm{197}}^1$

素因数の和:380

約数の個数: 48

約数和(自身を含む): 61072704

約数和(自身を除く): 32826844

約数列:

[1, 2, 4, 5, 10, 20, 67, 107, 134, 197, 214, 268, 335, 394, 428, 535, 670, 788, 985, 1070, 1340, 1970, 2140, 3940, 7169, 13199, 14338, 21079, 26398, 28676, 35845, 42158, 52796, 65995, 71690, 84316, 105395, 131990, 143380, 210790, 263980, 421580, 1412293, 2824586, 5649172, 7061465, 14122930, 28245860]

約数ペア:

[(1, 28245860), (2, 14122930), (4, 7061465), (5, 5649172), (10, 2824586), (20, 1412293), (67, 421580), (107, 263980), (134, 210790), (197, 143380), (214, 131990), (268, 105395), (335, 84316), (394, 71690), (428, 65995), (535, 52796), (670, 42158), (788, 35845), (985, 28676), (1070, 26398), (1340, 21079), (1970, 14338), (2140, 13199), (3940, 7169)]