20520570

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:212

約数の個数: 128

約数和(自身を含む): 61286400

約数和(自身を除く): 40765830

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 37, 38, 42, 57, 70, 74, 95, 105, 111, 114, 133, 139, 185, 190, 210, 222, 259, 266, 278, 285, 370, 399, 417, 518, 555, 570, 665, 695, 703, 777, 798, 834, 973, 1110, 1295, 1330, 1390, 1406, 1554, 1946, 1995, 2085, 2109, 2590, 2641, 2919, 3515, 3885, 3990, 4170, 4218, 4865, 4921, 5143, 5282, 5838, 7030, 7770, 7923, 9730, 9842, 10286, 10545, 13205, 14595, 14763, 15429, 15846, 18487, 21090, 24605, 25715, 26410, 29190, 29526, 30858, 36001, 36974, 39615, 49210, 51430, 55461, 72002, 73815, 77145, 79230, 92435, 97717, 108003, 110922, 147630, 154290, 180005, 184870, 195434, 216006, 277305, 293151, 360010, 488585, 540015, 554610, 586302, 684019, 977170, 1080030, 1368038, 1465755, 2052057, 2931510, 3420095, 4104114, 6840190, 10260285, 20520570]

約数ペア:

[(1, 20520570), (2, 10260285), (3, 6840190), (5, 4104114), (6, 3420095), (7, 2931510), (10, 2052057), (14, 1465755), (15, 1368038), (19, 1080030), (21, 977170), (30, 684019), (35, 586302), (37, 554610), (38, 540015), (42, 488585), (57, 360010), (70, 293151), (74, 277305), (95, 216006), (105, 195434), (111, 184870), (114, 180005), (133, 154290), (139, 147630), (185, 110922), (190, 108003), (210, 97717), (222, 92435), (259, 79230), (266, 77145), (278, 73815), (285, 72002), (370, 55461), (399, 51430), (417, 49210), (518, 39615), (555, 36974), (570, 36001), (665, 30858), (695, 29526), (703, 29190), (777, 26410), (798, 25715), (834, 24605), (973, 21090), (1110, 18487), (1295, 15846), (1330, 15429), (1390, 14763), (1406, 14595), (1554, 13205), (1946, 10545), (1995, 10286), (2085, 9842), (2109, 9730), (2590, 7923), (2641, 7770), (2919, 7030), (3515, 5838), (3885, 5282), (3990, 5143), (4170, 4921), (4218, 4865)]