20939040

素因数分解:

$2^5\times 3^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{131}}^1$

素因数の和:192

約数の個数: 192

約数和(自身を含む): 75841920

約数和(自身を除く): 54902880

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 32, 36, 37, 40, 45, 48, 54, 60, 72, 74, 80, 90, 96, 108, 111, 120, 131, 135, 144, 148, 160, 180, 185, 216, 222, 240, 262, 270, 288, 296, 333, 360, 370, 393, 432, 444, 480, 524, 540, 555, 592, 655, 666, 720, 740, 786, 864, 888, 999, 1048, 1080, 1110, 1179, 1184, 1310, 1332, 1440, 1480, 1572, 1665, 1776, 1965, 1998, 2096, 2160, 2220, 2358, 2620, 2664, 2960, 3144, 3330, 3537, 3552, 3930, 3996, 4192, 4320, 4440, 4716, 4847, 4995, 5240, 5328, 5895, 5920, 6288, 6660, 7074, 7860, 7992, 8880, 9432, 9694, 9990, 10480, 10656, 11790, 12576, 13320, 14148, 14541, 15720, 15984, 17685, 17760, 18864, 19388, 19980, 20960, 23580, 24235, 26640, 28296, 29082, 31440, 31968, 35370, 37728, 38776, 39960, 43623, 47160, 48470, 53280, 56592, 58164, 62880, 70740, 72705, 77552, 79920, 87246, 94320, 96940, 113184, 116328, 130869, 141480, 145410, 155104, 159840, 174492, 188640, 193880, 218115, 232656, 261738, 282960, 290820, 348984, 387760, 436230, 465312, 523476, 565920, 581640, 654345, 697968, 775520, 872460, 1046952, 1163280, 1308690, 1395936, 1744920, 2093904, 2326560, 2617380, 3489840, 4187808, 5234760, 6979680, 10469520, 20939040]

約数ペア:

[(1, 20939040), (2, 10469520), (3, 6979680), (4, 5234760), (5, 4187808), (6, 3489840), (8, 2617380), (9, 2326560), (10, 2093904), (12, 1744920), (15, 1395936), (16, 1308690), (18, 1163280), (20, 1046952), (24, 872460), (27, 775520), (30, 697968), (32, 654345), (36, 581640), (37, 565920), (40, 523476), (45, 465312), (48, 436230), (54, 387760), (60, 348984), (72, 290820), (74, 282960), (80, 261738), (90, 232656), (96, 218115), (108, 193880), (111, 188640), (120, 174492), (131, 159840), (135, 155104), (144, 145410), (148, 141480), (160, 130869), (180, 116328), (185, 113184), (216, 96940), (222, 94320), (240, 87246), (262, 79920), (270, 77552), (288, 72705), (296, 70740), (333, 62880), (360, 58164), (370, 56592), (393, 53280), (432, 48470), (444, 47160), (480, 43623), (524, 39960), (540, 38776), (555, 37728), (592, 35370), (655, 31968), (666, 31440), (720, 29082), (740, 28296), (786, 26640), (864, 24235), (888, 23580), (999, 20960), (1048, 19980), (1080, 19388), (1110, 18864), (1179, 17760), (1184, 17685), (1310, 15984), (1332, 15720), (1440, 14541), (1480, 14148), (1572, 13320), (1665, 12576), (1776, 11790), (1965, 10656), (1998, 10480), (2096, 9990), (2160, 9694), (2220, 9432), (2358, 8880), (2620, 7992), (2664, 7860), (2960, 7074), (3144, 6660), (3330, 6288), (3537, 5920), (3552, 5895), (3930, 5328), (3996, 5240), (4192, 4995), (4320, 4847), (4440, 4716)]