28419220

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{7213}}^1$

素因数の和:7419

約数の個数: 24

約数和(自身を含む): 59991624

約数和(自身を除く): 31572404

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 7213, 14426, 28852, 36065, 72130, 144260, 1420961, 2841922, 5683844, 7104805, 14209610, 28419220]

約数ペア:

[(1, 28419220), (2, 14209610), (4, 7104805), (5, 5683844), (10, 2841922), (20, 1420961), (197, 144260), (394, 72130), (788, 36065), (985, 28852), (1970, 14426), (3940, 7213)]