28197910

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6997}}^1$

素因数の和:7048

約数の個数: 32

約数和(自身を含む): 56431872

約数和(自身を除く): 28233962

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 6997, 13994, 34985, 69970, 90961, 181922, 216907, 433814, 454805, 909610, 1084535, 2169070, 2819791, 5639582, 14098955, 28197910]

約数ペア:

[(1, 28197910), (2, 14098955), (5, 5639582), (10, 2819791), (13, 2169070), (26, 1084535), (31, 909610), (62, 454805), (65, 433814), (130, 216907), (155, 181922), (310, 90961), (403, 69970), (806, 34985), (2015, 13994), (4030, 6997)]