641951201680

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{258851291}}^1$

素因数の和:258851335

約数の個数: 40

約数和(自身を含む): 1540682889984

約数和(自身を除く): 898731688304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 258851291, 517702582, 1035405164, 1294256455, 2070810328, 2588512910, 4141620656, 5177025820, 8024390021, 10354051640, 16048780042, 20708103280, 32097560084, 40121950105, 64195120168, 80243900210, 128390240336, 160487800420, 320975600840, 641951201680]

約数ペア:

[(1, 641951201680), (2, 320975600840), (4, 160487800420), (5, 128390240336), (8, 80243900210), (10, 64195120168), (16, 40121950105), (20, 32097560084), (31, 20708103280), (40, 16048780042), (62, 10354051640), (80, 8024390021), (124, 5177025820), (155, 4141620656), (248, 2588512910), (310, 2070810328), (496, 1294256455), (620, 1035405164), (1240, 517702582), (2480, 258851291)]