19910346345

素因数分解:

$3^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{203989}}^1$

素因数の和:204247

約数の個数: 40

約数和(自身を含む): 35839411080

約数和(自身を除く): 15929064735

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 241, 405, 723, 1205, 2169, 3615, 6507, 10845, 19521, 32535, 97605, 203989, 611967, 1019945, 1835901, 3059835, 5507703, 9179505, 16523109, 27538515, 49161349, 82615545, 147484047, 245806745, 442452141, 737420235, 1327356423, 2212260705, 3982069269, 6636782115, 19910346345]

約数ペア:

[(1, 19910346345), (3, 6636782115), (5, 3982069269), (9, 2212260705), (15, 1327356423), (27, 737420235), (45, 442452141), (81, 245806745), (135, 147484047), (241, 82615545), (405, 49161349), (723, 27538515), (1205, 16523109), (2169, 9179505), (3615, 5507703), (6507, 3059835), (10845, 1835901), (19521, 1019945), (32535, 611967), (97605, 203989)]