21002220

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:149

約数の個数: 192

約数和(自身を含む): 72576000

約数和(自身を除く): 51573780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 23, 27, 30, 36, 38, 45, 46, 54, 57, 60, 69, 76, 89, 90, 92, 95, 108, 114, 115, 135, 138, 171, 178, 180, 190, 207, 228, 230, 267, 270, 276, 285, 342, 345, 356, 380, 414, 437, 445, 460, 513, 534, 540, 570, 621, 684, 690, 801, 828, 855, 874, 890, 1026, 1035, 1068, 1140, 1242, 1311, 1335, 1380, 1602, 1691, 1710, 1748, 1780, 2047, 2052, 2070, 2185, 2403, 2484, 2565, 2622, 2670, 3105, 3204, 3382, 3420, 3933, 4005, 4094, 4140, 4370, 4806, 5073, 5130, 5244, 5340, 6141, 6210, 6555, 6764, 7866, 8010, 8188, 8455, 8740, 9612, 10146, 10235, 10260, 11799, 12015, 12282, 12420, 13110, 15219, 15732, 16020, 16910, 18423, 19665, 20292, 20470, 23598, 24030, 24564, 25365, 26220, 30438, 30705, 33820, 36846, 38893, 39330, 40940, 45657, 47196, 48060, 50730, 55269, 58995, 60876, 61410, 73692, 76095, 77786, 78660, 91314, 92115, 101460, 110538, 116679, 117990, 122820, 152190, 155572, 182628, 184230, 194465, 221076, 228285, 233358, 235980, 276345, 304380, 350037, 368460, 388930, 456570, 466716, 552690, 583395, 700074, 777860, 913140, 1050111, 1105380, 1166790, 1400148, 1750185, 2100222, 2333580, 3500370, 4200444, 5250555, 7000740, 10501110, 21002220]

約数ペア:

[(1, 21002220), (2, 10501110), (3, 7000740), (4, 5250555), (5, 4200444), (6, 3500370), (9, 2333580), (10, 2100222), (12, 1750185), (15, 1400148), (18, 1166790), (19, 1105380), (20, 1050111), (23, 913140), (27, 777860), (30, 700074), (36, 583395), (38, 552690), (45, 466716), (46, 456570), (54, 388930), (57, 368460), (60, 350037), (69, 304380), (76, 276345), (89, 235980), (90, 233358), (92, 228285), (95, 221076), (108, 194465), (114, 184230), (115, 182628), (135, 155572), (138, 152190), (171, 122820), (178, 117990), (180, 116679), (190, 110538), (207, 101460), (228, 92115), (230, 91314), (267, 78660), (270, 77786), (276, 76095), (285, 73692), (342, 61410), (345, 60876), (356, 58995), (380, 55269), (414, 50730), (437, 48060), (445, 47196), (460, 45657), (513, 40940), (534, 39330), (540, 38893), (570, 36846), (621, 33820), (684, 30705), (690, 30438), (801, 26220), (828, 25365), (855, 24564), (874, 24030), (890, 23598), (1026, 20470), (1035, 20292), (1068, 19665), (1140, 18423), (1242, 16910), (1311, 16020), (1335, 15732), (1380, 15219), (1602, 13110), (1691, 12420), (1710, 12282), (1748, 12015), (1780, 11799), (2047, 10260), (2052, 10235), (2070, 10146), (2185, 9612), (2403, 8740), (2484, 8455), (2565, 8188), (2622, 8010), (2670, 7866), (3105, 6764), (3204, 6555), (3382, 6210), (3420, 6141), (3933, 5340), (4005, 5244), (4094, 5130), (4140, 5073), (4370, 4806)]