21050280

素因数分解:

$2^3\times 3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 160

約数和(自身を含む): 72527400

約数和(自身を除く): 51477120

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, 73, 81, 89, 90, 108, 120, 135, 146, 162, 178, 180, 216, 219, 267, 270, 292, 324, 356, 360, 365, 405, 438, 445, 534, 540, 584, 648, 657, 712, 730, 801, 810, 876, 890, 1068, 1080, 1095, 1314, 1335, 1460, 1602, 1620, 1752, 1780, 1971, 2136, 2190, 2403, 2628, 2670, 2920, 3204, 3240, 3285, 3560, 3942, 4005, 4380, 4806, 5256, 5340, 5913, 6408, 6497, 6570, 7209, 7884, 8010, 8760, 9612, 9855, 10680, 11826, 12015, 12994, 13140, 14418, 15768, 16020, 19224, 19491, 19710, 23652, 24030, 25988, 26280, 28836, 29565, 32040, 32485, 36045, 38982, 39420, 47304, 48060, 51976, 57672, 58473, 59130, 64970, 72090, 77964, 78840, 96120, 97455, 116946, 118260, 129940, 144180, 155928, 175419, 194910, 233892, 236520, 259880, 288360, 292365, 350838, 389820, 467784, 526257, 584730, 701676, 779640, 877095, 1052514, 1169460, 1403352, 1754190, 2105028, 2338920, 2631285, 3508380, 4210056, 5262570, 7016760, 10525140, 21050280]

約数ペア:

[(1, 21050280), (2, 10525140), (3, 7016760), (4, 5262570), (5, 4210056), (6, 3508380), (8, 2631285), (9, 2338920), (10, 2105028), (12, 1754190), (15, 1403352), (18, 1169460), (20, 1052514), (24, 877095), (27, 779640), (30, 701676), (36, 584730), (40, 526257), (45, 467784), (54, 389820), (60, 350838), (72, 292365), (73, 288360), (81, 259880), (89, 236520), (90, 233892), (108, 194910), (120, 175419), (135, 155928), (146, 144180), (162, 129940), (178, 118260), (180, 116946), (216, 97455), (219, 96120), (267, 78840), (270, 77964), (292, 72090), (324, 64970), (356, 59130), (360, 58473), (365, 57672), (405, 51976), (438, 48060), (445, 47304), (534, 39420), (540, 38982), (584, 36045), (648, 32485), (657, 32040), (712, 29565), (730, 28836), (801, 26280), (810, 25988), (876, 24030), (890, 23652), (1068, 19710), (1080, 19491), (1095, 19224), (1314, 16020), (1335, 15768), (1460, 14418), (1602, 13140), (1620, 12994), (1752, 12015), (1780, 11826), (1971, 10680), (2136, 9855), (2190, 9612), (2403, 8760), (2628, 8010), (2670, 7884), (2920, 7209), (3204, 6570), (3240, 6497), (3285, 6408), (3560, 5913), (3942, 5340), (4005, 5256), (4380, 4806)]