20907540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2833}}^1$

素因数の和:2889

約数の個数: 72

約数和(自身を含む): 64989288

約数和(自身を除く): 44081748

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 41, 45, 60, 82, 90, 123, 164, 180, 205, 246, 369, 410, 492, 615, 738, 820, 1230, 1476, 1845, 2460, 2833, 3690, 5666, 7380, 8499, 11332, 14165, 16998, 25497, 28330, 33996, 42495, 50994, 56660, 84990, 101988, 116153, 127485, 169980, 232306, 254970, 348459, 464612, 509940, 580765, 696918, 1045377, 1161530, 1393836, 1742295, 2090754, 2323060, 3484590, 4181508, 5226885, 6969180, 10453770, 20907540]

約数ペア:

[(1, 20907540), (2, 10453770), (3, 6969180), (4, 5226885), (5, 4181508), (6, 3484590), (9, 2323060), (10, 2090754), (12, 1742295), (15, 1393836), (18, 1161530), (20, 1045377), (30, 696918), (36, 580765), (41, 509940), (45, 464612), (60, 348459), (82, 254970), (90, 232306), (123, 169980), (164, 127485), (180, 116153), (205, 101988), (246, 84990), (369, 56660), (410, 50994), (492, 42495), (615, 33996), (738, 28330), (820, 25497), (1230, 16998), (1476, 14165), (1845, 11332), (2460, 8499), (2833, 7380), (3690, 5666)]