81287640

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{32257}}^1$

素因数の和:32281

約数の個数: 96

約数和(自身を含む): 301934880

約数和(自身を除く): 220647240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 32257, 64514, 96771, 129028, 161285, 193542, 225799, 258056, 290313, 322570, 387084, 451598, 483855, 580626, 645140, 677397, 774168, 903196, 967710, 1128995, 1161252, 1290280, 1354794, 1451565, 1806392, 1935420, 2032191, 2257990, 2322504, 2709588, 2903130, 3386985, 3870840, 4064382, 4515980, 5419176, 5806260, 6773970, 8128764, 9031960, 10160955, 11612520, 13547940, 16257528, 20321910, 27095880, 40643820, 81287640]

約数ペア:

[(1, 81287640), (2, 40643820), (3, 27095880), (4, 20321910), (5, 16257528), (6, 13547940), (7, 11612520), (8, 10160955), (9, 9031960), (10, 8128764), (12, 6773970), (14, 5806260), (15, 5419176), (18, 4515980), (20, 4064382), (21, 3870840), (24, 3386985), (28, 2903130), (30, 2709588), (35, 2322504), (36, 2257990), (40, 2032191), (42, 1935420), (45, 1806392), (56, 1451565), (60, 1354794), (63, 1290280), (70, 1161252), (72, 1128995), (84, 967710), (90, 903196), (105, 774168), (120, 677397), (126, 645140), (140, 580626), (168, 483855), (180, 451598), (210, 387084), (252, 322570), (280, 290313), (315, 258056), (360, 225799), (420, 193542), (504, 161285), (630, 129028), (840, 96771), (1260, 64514), (2520, 32257)]