21181320

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3461}}^1$

素因数の和:3495

約数の個数: 96

約数和(自身を含む): 72909720

約数和(自身を除く): 51728400

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 17, 18, 20, 24, 30, 34, 36, 40, 45, 51, 60, 68, 72, 85, 90, 102, 120, 136, 153, 170, 180, 204, 255, 306, 340, 360, 408, 510, 612, 680, 765, 1020, 1224, 1530, 2040, 3060, 3461, 6120, 6922, 10383, 13844, 17305, 20766, 27688, 31149, 34610, 41532, 51915, 58837, 62298, 69220, 83064, 103830, 117674, 124596, 138440, 155745, 176511, 207660, 235348, 249192, 294185, 311490, 353022, 415320, 470696, 529533, 588370, 622980, 706044, 882555, 1059066, 1176740, 1245960, 1412088, 1765110, 2118132, 2353480, 2647665, 3530220, 4236264, 5295330, 7060440, 10590660, 21181320]

約数ペア:

[(1, 21181320), (2, 10590660), (3, 7060440), (4, 5295330), (5, 4236264), (6, 3530220), (8, 2647665), (9, 2353480), (10, 2118132), (12, 1765110), (15, 1412088), (17, 1245960), (18, 1176740), (20, 1059066), (24, 882555), (30, 706044), (34, 622980), (36, 588370), (40, 529533), (45, 470696), (51, 415320), (60, 353022), (68, 311490), (72, 294185), (85, 249192), (90, 235348), (102, 207660), (120, 176511), (136, 155745), (153, 138440), (170, 124596), (180, 117674), (204, 103830), (255, 83064), (306, 69220), (340, 62298), (360, 58837), (408, 51915), (510, 41532), (612, 34610), (680, 31149), (765, 27688), (1020, 20766), (1224, 17305), (1530, 13844), (2040, 10383), (3060, 6922), (3461, 6120)]