20541840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:309

約数の個数: 160

約数和(自身を含む): 71995392

約数和(自身を除く): 51453552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 31, 33, 40, 44, 48, 55, 60, 62, 66, 80, 88, 93, 110, 120, 124, 132, 155, 165, 176, 186, 220, 240, 248, 251, 264, 310, 330, 341, 372, 440, 465, 496, 502, 528, 620, 660, 682, 744, 753, 880, 930, 1004, 1023, 1240, 1255, 1320, 1364, 1488, 1506, 1705, 1860, 2008, 2046, 2480, 2510, 2640, 2728, 2761, 3012, 3410, 3720, 3765, 4016, 4092, 5020, 5115, 5456, 5522, 6024, 6820, 7440, 7530, 7781, 8184, 8283, 10040, 10230, 11044, 12048, 13640, 13805, 15060, 15562, 16368, 16566, 20080, 20460, 22088, 23343, 27280, 27610, 30120, 31124, 33132, 38905, 40920, 41415, 44176, 46686, 55220, 60240, 62248, 66264, 77810, 81840, 82830, 85591, 93372, 110440, 116715, 124496, 132528, 155620, 165660, 171182, 186744, 220880, 233430, 256773, 311240, 331320, 342364, 373488, 427955, 466860, 513546, 622480, 662640, 684728, 855910, 933720, 1027092, 1283865, 1369456, 1711820, 1867440, 2054184, 2567730, 3423640, 4108368, 5135460, 6847280, 10270920, 20541840]

約数ペア:

[(1, 20541840), (2, 10270920), (3, 6847280), (4, 5135460), (5, 4108368), (6, 3423640), (8, 2567730), (10, 2054184), (11, 1867440), (12, 1711820), (15, 1369456), (16, 1283865), (20, 1027092), (22, 933720), (24, 855910), (30, 684728), (31, 662640), (33, 622480), (40, 513546), (44, 466860), (48, 427955), (55, 373488), (60, 342364), (62, 331320), (66, 311240), (80, 256773), (88, 233430), (93, 220880), (110, 186744), (120, 171182), (124, 165660), (132, 155620), (155, 132528), (165, 124496), (176, 116715), (186, 110440), (220, 93372), (240, 85591), (248, 82830), (251, 81840), (264, 77810), (310, 66264), (330, 62248), (341, 60240), (372, 55220), (440, 46686), (465, 44176), (496, 41415), (502, 40920), (528, 38905), (620, 33132), (660, 31124), (682, 30120), (744, 27610), (753, 27280), (880, 23343), (930, 22088), (1004, 20460), (1023, 20080), (1240, 16566), (1255, 16368), (1320, 15562), (1364, 15060), (1488, 13805), (1506, 13640), (1705, 12048), (1860, 11044), (2008, 10230), (2046, 10040), (2480, 8283), (2510, 8184), (2640, 7781), (2728, 7530), (2761, 7440), (3012, 6820), (3410, 6024), (3720, 5522), (3765, 5456), (4016, 5115), (4092, 5020)]