644508865

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{983}}^1$

素因数の和:1150

約数の個数: 64

約数和(自身を含む): 1047416832

約数和(自身を除く): 402907967

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 131, 143, 385, 455, 655, 715, 917, 983, 1001, 1441, 1703, 4585, 4915, 5005, 6881, 7205, 8515, 10087, 10813, 11921, 12779, 18733, 34405, 50435, 54065, 59605, 63895, 75691, 89453, 93665, 128773, 131131, 140569, 378455, 447265, 643865, 655655, 702845, 901411, 983983, 1416503, 1674049, 4507055, 4919915, 7082515, 8370245, 9915521, 11718343, 18414539, 49577605, 58591715, 92072695, 128901773, 644508865]

約数ペア:

[(1, 644508865), (5, 128901773), (7, 92072695), (11, 58591715), (13, 49577605), (35, 18414539), (55, 11718343), (65, 9915521), (77, 8370245), (91, 7082515), (131, 4919915), (143, 4507055), (385, 1674049), (455, 1416503), (655, 983983), (715, 901411), (917, 702845), (983, 655655), (1001, 643865), (1441, 447265), (1703, 378455), (4585, 140569), (4915, 131131), (5005, 128773), (6881, 93665), (7205, 89453), (8515, 75691), (10087, 63895), (10813, 59605), (11921, 54065), (12779, 50435), (18733, 34405)]