90405720

素因数分解:

$2^3\times 3^5\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1$

素因数の和:228

約数の個数: 192

約数和(自身を含む): 311351040

約数和(自身を除く): 220945320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 71, 72, 81, 90, 108, 120, 131, 135, 142, 162, 180, 213, 216, 243, 262, 270, 284, 324, 355, 360, 393, 405, 426, 486, 524, 540, 568, 639, 648, 655, 710, 786, 810, 852, 972, 1048, 1065, 1080, 1179, 1215, 1278, 1310, 1420, 1572, 1620, 1704, 1917, 1944, 1965, 2130, 2358, 2430, 2556, 2620, 2840, 3144, 3195, 3240, 3537, 3834, 3930, 4260, 4716, 4860, 5112, 5240, 5751, 5895, 6390, 7074, 7668, 7860, 8520, 9301, 9432, 9585, 9720, 10611, 11502, 11790, 12780, 14148, 15336, 15720, 17253, 17685, 18602, 19170, 21222, 23004, 23580, 25560, 27903, 28296, 28755, 31833, 34506, 35370, 37204, 38340, 42444, 46008, 46505, 47160, 53055, 55806, 57510, 63666, 69012, 70740, 74408, 76680, 83709, 84888, 86265, 93010, 106110, 111612, 115020, 127332, 138024, 139515, 141480, 159165, 167418, 172530, 186020, 212220, 223224, 230040, 251127, 254664, 279030, 318330, 334836, 345060, 372040, 418545, 424440, 502254, 558060, 636660, 669672, 690120, 753381, 837090, 1004508, 1116120, 1255635, 1273320, 1506762, 1674180, 2009016, 2260143, 2511270, 3013524, 3348360, 3766905, 4520286, 5022540, 6027048, 7533810, 9040572, 10045080, 11300715, 15067620, 18081144, 22601430, 30135240, 45202860, 90405720]

約数ペア:

[(1, 90405720), (2, 45202860), (3, 30135240), (4, 22601430), (5, 18081144), (6, 15067620), (8, 11300715), (9, 10045080), (10, 9040572), (12, 7533810), (15, 6027048), (18, 5022540), (20, 4520286), (24, 3766905), (27, 3348360), (30, 3013524), (36, 2511270), (40, 2260143), (45, 2009016), (54, 1674180), (60, 1506762), (71, 1273320), (72, 1255635), (81, 1116120), (90, 1004508), (108, 837090), (120, 753381), (131, 690120), (135, 669672), (142, 636660), (162, 558060), (180, 502254), (213, 424440), (216, 418545), (243, 372040), (262, 345060), (270, 334836), (284, 318330), (324, 279030), (355, 254664), (360, 251127), (393, 230040), (405, 223224), (426, 212220), (486, 186020), (524, 172530), (540, 167418), (568, 159165), (639, 141480), (648, 139515), (655, 138024), (710, 127332), (786, 115020), (810, 111612), (852, 106110), (972, 93010), (1048, 86265), (1065, 84888), (1080, 83709), (1179, 76680), (1215, 74408), (1278, 70740), (1310, 69012), (1420, 63666), (1572, 57510), (1620, 55806), (1704, 53055), (1917, 47160), (1944, 46505), (1965, 46008), (2130, 42444), (2358, 38340), (2430, 37204), (2556, 35370), (2620, 34506), (2840, 31833), (3144, 28755), (3195, 28296), (3240, 27903), (3537, 25560), (3834, 23580), (3930, 23004), (4260, 21222), (4716, 19170), (4860, 18602), (5112, 17685), (5240, 17253), (5751, 15720), (5895, 15336), (6390, 14148), (7074, 12780), (7668, 11790), (7860, 11502), (8520, 10611), (9301, 9720), (9432, 9585)]