20420280

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{433}}^1$

素因数の和:581

約数の個数: 96

約数和(自身を含む): 67026960

約数和(自身を除く): 46606680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 131, 180, 262, 360, 393, 433, 524, 655, 786, 866, 1048, 1179, 1299, 1310, 1572, 1732, 1965, 2165, 2358, 2598, 2620, 3144, 3464, 3897, 3930, 4330, 4716, 5196, 5240, 5895, 6495, 7794, 7860, 8660, 9432, 10392, 11790, 12990, 15588, 15720, 17320, 19485, 23580, 25980, 31176, 38970, 47160, 51960, 56723, 77940, 113446, 155880, 170169, 226892, 283615, 340338, 453784, 510507, 567230, 680676, 850845, 1021014, 1134460, 1361352, 1701690, 2042028, 2268920, 2552535, 3403380, 4084056, 5105070, 6806760, 10210140, 20420280]

約数ペア:

[(1, 20420280), (2, 10210140), (3, 6806760), (4, 5105070), (5, 4084056), (6, 3403380), (8, 2552535), (9, 2268920), (10, 2042028), (12, 1701690), (15, 1361352), (18, 1134460), (20, 1021014), (24, 850845), (30, 680676), (36, 567230), (40, 510507), (45, 453784), (60, 340338), (72, 283615), (90, 226892), (120, 170169), (131, 155880), (180, 113446), (262, 77940), (360, 56723), (393, 51960), (433, 47160), (524, 38970), (655, 31176), (786, 25980), (866, 23580), (1048, 19485), (1179, 17320), (1299, 15720), (1310, 15588), (1572, 12990), (1732, 11790), (1965, 10392), (2165, 9432), (2358, 8660), (2598, 7860), (2620, 7794), (3144, 6495), (3464, 5895), (3897, 5240), (3930, 5196), (4330, 4716)]