81584820

素因数分解:

$2^2\times 3^5\times 5^1\times {\mathrm{16787}}^1$

素因数の和:16811

約数の個数: 72

約数和(自身を含む): 256654944

約数和(自身を除く): 175070124

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 81, 90, 108, 135, 162, 180, 243, 270, 324, 405, 486, 540, 810, 972, 1215, 1620, 2430, 4860, 16787, 33574, 50361, 67148, 83935, 100722, 151083, 167870, 201444, 251805, 302166, 335740, 453249, 503610, 604332, 755415, 906498, 1007220, 1359747, 1510830, 1812996, 2266245, 2719494, 3021660, 4079241, 4532490, 5438988, 6798735, 8158482, 9064980, 13597470, 16316964, 20396205, 27194940, 40792410, 81584820]

約数ペア:

[(1, 81584820), (2, 40792410), (3, 27194940), (4, 20396205), (5, 16316964), (6, 13597470), (9, 9064980), (10, 8158482), (12, 6798735), (15, 5438988), (18, 4532490), (20, 4079241), (27, 3021660), (30, 2719494), (36, 2266245), (45, 1812996), (54, 1510830), (60, 1359747), (81, 1007220), (90, 906498), (108, 755415), (135, 604332), (162, 503610), (180, 453249), (243, 335740), (270, 302166), (324, 251805), (405, 201444), (486, 167870), (540, 151083), (810, 100722), (972, 83935), (1215, 67148), (1620, 50361), (2430, 33574), (4860, 16787)]