1781717980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{20233}}^1$

素因数の和:20303

約数の個数: 96

約数和(自身を含む): 4650258816

約数和(自身を除く): 2868540836

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 37, 68, 70, 74, 85, 119, 140, 148, 170, 185, 238, 259, 340, 370, 476, 518, 595, 629, 740, 1036, 1190, 1258, 1295, 2380, 2516, 2590, 3145, 4403, 5180, 6290, 8806, 12580, 17612, 20233, 22015, 40466, 44030, 80932, 88060, 101165, 141631, 202330, 283262, 343961, 404660, 566524, 687922, 708155, 748621, 1375844, 1416310, 1497242, 1719805, 2407727, 2832620, 2994484, 3439610, 3743105, 4815454, 5240347, 6879220, 7486210, 9630908, 10480694, 12038635, 12726557, 14972420, 20961388, 24077270, 25453114, 26201735, 48154540, 50906228, 52403470, 63632785, 89085899, 104806940, 127265570, 178171798, 254531140, 356343596, 445429495, 890858990, 1781717980]

約数ペア:

[(1, 1781717980), (2, 890858990), (4, 445429495), (5, 356343596), (7, 254531140), (10, 178171798), (14, 127265570), (17, 104806940), (20, 89085899), (28, 63632785), (34, 52403470), (35, 50906228), (37, 48154540), (68, 26201735), (70, 25453114), (74, 24077270), (85, 20961388), (119, 14972420), (140, 12726557), (148, 12038635), (170, 10480694), (185, 9630908), (238, 7486210), (259, 6879220), (340, 5240347), (370, 4815454), (476, 3743105), (518, 3439610), (595, 2994484), (629, 2832620), (740, 2407727), (1036, 1719805), (1190, 1497242), (1258, 1416310), (1295, 1375844), (2380, 748621), (2516, 708155), (2590, 687922), (3145, 566524), (4403, 404660), (5180, 343961), (6290, 283262), (8806, 202330), (12580, 141631), (17612, 101165), (20233, 88060), (22015, 80932), (40466, 44030)]