21168540

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:273

約数の個数: 120

約数和(自身を含む): 67692240

約数和(自身を除く): 46523700

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 73, 81, 90, 108, 135, 146, 162, 179, 180, 219, 270, 292, 324, 358, 365, 405, 438, 537, 540, 657, 716, 730, 810, 876, 895, 1074, 1095, 1314, 1460, 1611, 1620, 1790, 1971, 2148, 2190, 2628, 2685, 3222, 3285, 3580, 3942, 4380, 4833, 5370, 5913, 6444, 6570, 7884, 8055, 9666, 9855, 10740, 11826, 13067, 13140, 14499, 16110, 19332, 19710, 23652, 24165, 26134, 28998, 29565, 32220, 39201, 39420, 48330, 52268, 57996, 59130, 65335, 72495, 78402, 96660, 117603, 118260, 130670, 144990, 156804, 196005, 235206, 261340, 289980, 352809, 392010, 470412, 588015, 705618, 784020, 1058427, 1176030, 1411236, 1764045, 2116854, 2352060, 3528090, 4233708, 5292135, 7056180, 10584270, 21168540]

約数ペア:

[(1, 21168540), (2, 10584270), (3, 7056180), (4, 5292135), (5, 4233708), (6, 3528090), (9, 2352060), (10, 2116854), (12, 1764045), (15, 1411236), (18, 1176030), (20, 1058427), (27, 784020), (30, 705618), (36, 588015), (45, 470412), (54, 392010), (60, 352809), (73, 289980), (81, 261340), (90, 235206), (108, 196005), (135, 156804), (146, 144990), (162, 130670), (179, 118260), (180, 117603), (219, 96660), (270, 78402), (292, 72495), (324, 65335), (358, 59130), (365, 57996), (405, 52268), (438, 48330), (537, 39420), (540, 39201), (657, 32220), (716, 29565), (730, 28998), (810, 26134), (876, 24165), (895, 23652), (1074, 19710), (1095, 19332), (1314, 16110), (1460, 14499), (1611, 13140), (1620, 13067), (1790, 11826), (1971, 10740), (2148, 9855), (2190, 9666), (2628, 8055), (2685, 7884), (3222, 6570), (3285, 6444), (3580, 5913), (3942, 5370), (4380, 4833)]