20545650

素因数分解:

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

素因数の和:135

約数の個数: 144

約数和(自身を含む): 60933600

約数和(自身を除く): 40387950

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 19, 25, 27, 30, 38, 45, 50, 54, 57, 75, 81, 89, 90, 95, 114, 135, 150, 162, 171, 178, 190, 225, 243, 267, 270, 285, 342, 405, 445, 450, 475, 486, 513, 534, 570, 675, 801, 810, 855, 890, 950, 1026, 1215, 1335, 1350, 1425, 1539, 1602, 1691, 1710, 2025, 2225, 2403, 2430, 2565, 2670, 2850, 3078, 3382, 4005, 4050, 4275, 4450, 4617, 4806, 5073, 5130, 6075, 6675, 7209, 7695, 8010, 8455, 8550, 9234, 10146, 12015, 12150, 12825, 13350, 14418, 15219, 15390, 16910, 20025, 21627, 23085, 24030, 25365, 25650, 30438, 36045, 38475, 40050, 42275, 43254, 45657, 46170, 50730, 60075, 72090, 76095, 76950, 84550, 91314, 108135, 115425, 120150, 126825, 136971, 152190, 180225, 216270, 228285, 230850, 253650, 273942, 360450, 380475, 410913, 456570, 540675, 684855, 760950, 821826, 1081350, 1141425, 1369710, 2054565, 2282850, 3424275, 4109130, 6848550, 10272825, 20545650]

約数ペア:

[(1, 20545650), (2, 10272825), (3, 6848550), (5, 4109130), (6, 3424275), (9, 2282850), (10, 2054565), (15, 1369710), (18, 1141425), (19, 1081350), (25, 821826), (27, 760950), (30, 684855), (38, 540675), (45, 456570), (50, 410913), (54, 380475), (57, 360450), (75, 273942), (81, 253650), (89, 230850), (90, 228285), (95, 216270), (114, 180225), (135, 152190), (150, 136971), (162, 126825), (171, 120150), (178, 115425), (190, 108135), (225, 91314), (243, 84550), (267, 76950), (270, 76095), (285, 72090), (342, 60075), (405, 50730), (445, 46170), (450, 45657), (475, 43254), (486, 42275), (513, 40050), (534, 38475), (570, 36045), (675, 30438), (801, 25650), (810, 25365), (855, 24030), (890, 23085), (950, 21627), (1026, 20025), (1215, 16910), (1335, 15390), (1350, 15219), (1425, 14418), (1539, 13350), (1602, 12825), (1691, 12150), (1710, 12015), (2025, 10146), (2225, 9234), (2403, 8550), (2430, 8455), (2565, 8010), (2670, 7695), (2850, 7209), (3078, 6675), (3382, 6075), (4005, 5130), (4050, 5073), (4275, 4806), (4450, 4617)]