18747560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{1163}}^1$

素因数の和:1218

約数の個数: 64

約数和(自身を含む): 46932480

約数和(自身を除く): 28184920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 31, 40, 52, 62, 65, 104, 124, 130, 155, 248, 260, 310, 403, 520, 620, 806, 1163, 1240, 1612, 2015, 2326, 3224, 4030, 4652, 5815, 8060, 9304, 11630, 15119, 16120, 23260, 30238, 36053, 46520, 60476, 72106, 75595, 120952, 144212, 151190, 180265, 288424, 302380, 360530, 468689, 604760, 721060, 937378, 1442120, 1874756, 2343445, 3749512, 4686890, 9373780, 18747560]

約数ペア:

[(1, 18747560), (2, 9373780), (4, 4686890), (5, 3749512), (8, 2343445), (10, 1874756), (13, 1442120), (20, 937378), (26, 721060), (31, 604760), (40, 468689), (52, 360530), (62, 302380), (65, 288424), (104, 180265), (124, 151190), (130, 144212), (155, 120952), (248, 75595), (260, 72106), (310, 60476), (403, 46520), (520, 36053), (620, 30238), (806, 23260), (1163, 16120), (1240, 15119), (1612, 11630), (2015, 9304), (2326, 8060), (3224, 5815), (4030, 4652)]