20349540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{131}}^1\times {\mathrm{863}}^1$

素因数の和:1009

約数の個数: 72

約数和(自身を含む): 62270208

約数和(自身を除く): 41920668

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 131, 180, 262, 393, 524, 655, 786, 863, 1179, 1310, 1572, 1726, 1965, 2358, 2589, 2620, 3452, 3930, 4315, 4716, 5178, 5895, 7767, 7860, 8630, 10356, 11790, 12945, 15534, 17260, 23580, 25890, 31068, 38835, 51780, 77670, 113053, 155340, 226106, 339159, 452212, 565265, 678318, 1017477, 1130530, 1356636, 1695795, 2034954, 2261060, 3391590, 4069908, 5087385, 6783180, 10174770, 20349540]

約数ペア:

[(1, 20349540), (2, 10174770), (3, 6783180), (4, 5087385), (5, 4069908), (6, 3391590), (9, 2261060), (10, 2034954), (12, 1695795), (15, 1356636), (18, 1130530), (20, 1017477), (30, 678318), (36, 565265), (45, 452212), (60, 339159), (90, 226106), (131, 155340), (180, 113053), (262, 77670), (393, 51780), (524, 38835), (655, 31068), (786, 25890), (863, 23580), (1179, 17260), (1310, 15534), (1572, 12945), (1726, 11790), (1965, 10356), (2358, 8630), (2589, 7860), (2620, 7767), (3452, 5895), (3930, 5178), (4315, 4716)]