21555720

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{6653}}^1$

素因数の和:6676

約数の個数: 80

約数和(自身を含む): 72462060

約数和(自身を除く): 50906340

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240, 6653, 13306, 19959, 26612, 33265, 39918, 53224, 59877, 66530, 79836, 99795, 119754, 133060, 159672, 179631, 199590, 239508, 266120, 299385, 359262, 399180, 479016, 538893, 598770, 718524, 798360, 898155, 1077786, 1197540, 1437048, 1796310, 2155572, 2395080, 2694465, 3592620, 4311144, 5388930, 7185240, 10777860, 21555720]

約数ペア:

[(1, 21555720), (2, 10777860), (3, 7185240), (4, 5388930), (5, 4311144), (6, 3592620), (8, 2694465), (9, 2395080), (10, 2155572), (12, 1796310), (15, 1437048), (18, 1197540), (20, 1077786), (24, 898155), (27, 798360), (30, 718524), (36, 598770), (40, 538893), (45, 479016), (54, 399180), (60, 359262), (72, 299385), (81, 266120), (90, 239508), (108, 199590), (120, 179631), (135, 159672), (162, 133060), (180, 119754), (216, 99795), (270, 79836), (324, 66530), (360, 59877), (405, 53224), (540, 39918), (648, 33265), (810, 26612), (1080, 19959), (1620, 13306), (3240, 6653)]