1285687520

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{618119}}^1$

素因数の和:618147

約数の個数: 48

約数和(自身を含む): 3271091040

約数和(自身を除く): 1985403520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 618119, 1236238, 2472476, 3090595, 4944952, 6181190, 8035547, 9889904, 12362380, 16071094, 19779808, 24724760, 32142188, 40177735, 49449520, 64284376, 80355470, 98899040, 128568752, 160710940, 257137504, 321421880, 642843760, 1285687520]

約数ペア:

[(1, 1285687520), (2, 642843760), (4, 321421880), (5, 257137504), (8, 160710940), (10, 128568752), (13, 98899040), (16, 80355470), (20, 64284376), (26, 49449520), (32, 40177735), (40, 32142188), (52, 24724760), (65, 19779808), (80, 16071094), (104, 12362380), (130, 9889904), (160, 8035547), (208, 6181190), (260, 4944952), (416, 3090595), (520, 2472476), (1040, 1236238), (2080, 618119)]