20200180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1009}}^1$

素因数の和:1049

約数の個数: 96

約数和(自身を含む): 57012480

約数和(自身を除く): 36812300

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 20, 22, 26, 28, 35, 44, 52, 55, 65, 70, 77, 91, 110, 130, 140, 143, 154, 182, 220, 260, 286, 308, 364, 385, 455, 572, 715, 770, 910, 1001, 1009, 1430, 1540, 1820, 2002, 2018, 2860, 4004, 4036, 5005, 5045, 7063, 10010, 10090, 11099, 13117, 14126, 20020, 20180, 22198, 26234, 28252, 35315, 44396, 52468, 55495, 65585, 70630, 77693, 91819, 110990, 131170, 141260, 144287, 155386, 183638, 221980, 262340, 288574, 310772, 367276, 388465, 459095, 577148, 721435, 776930, 918190, 1010009, 1442870, 1553860, 1836380, 2020018, 2885740, 4040036, 5050045, 10100090, 20200180]

約数ペア:

[(1, 20200180), (2, 10100090), (4, 5050045), (5, 4040036), (7, 2885740), (10, 2020018), (11, 1836380), (13, 1553860), (14, 1442870), (20, 1010009), (22, 918190), (26, 776930), (28, 721435), (35, 577148), (44, 459095), (52, 388465), (55, 367276), (65, 310772), (70, 288574), (77, 262340), (91, 221980), (110, 183638), (130, 155386), (140, 144287), (143, 141260), (154, 131170), (182, 110990), (220, 91819), (260, 77693), (286, 70630), (308, 65585), (364, 55495), (385, 52468), (455, 44396), (572, 35315), (715, 28252), (770, 26234), (910, 22198), (1001, 20180), (1009, 20020), (1430, 14126), (1540, 13117), (1820, 11099), (2002, 10090), (2018, 10010), (2860, 7063), (4004, 5045), (4036, 5005)]