21954450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:161

約数の個数: 144

約数和(自身を含む): 66156480

約数和(自身を除く): 44202030

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 29, 30, 35, 42, 49, 50, 58, 70, 75, 87, 98, 103, 105, 145, 147, 150, 174, 175, 203, 206, 210, 245, 290, 294, 309, 350, 406, 435, 490, 515, 525, 609, 618, 721, 725, 735, 870, 1015, 1030, 1050, 1218, 1225, 1421, 1442, 1450, 1470, 1545, 2030, 2163, 2175, 2450, 2575, 2842, 2987, 3045, 3090, 3605, 3675, 4263, 4326, 4350, 5047, 5075, 5150, 5974, 6090, 7105, 7210, 7350, 7725, 8526, 8961, 10094, 10150, 10815, 14210, 14935, 15141, 15225, 15450, 17922, 18025, 20909, 21315, 21630, 25235, 29870, 30282, 30450, 35525, 36050, 41818, 42630, 44805, 50470, 54075, 62727, 71050, 74675, 75705, 89610, 104545, 106575, 108150, 125454, 126175, 146363, 149350, 151410, 209090, 213150, 224025, 252350, 292726, 313635, 378525, 439089, 448050, 522725, 627270, 731815, 757050, 878178, 1045450, 1463630, 1568175, 2195445, 3136350, 3659075, 4390890, 7318150, 10977225, 21954450]

約数ペア:

[(1, 21954450), (2, 10977225), (3, 7318150), (5, 4390890), (6, 3659075), (7, 3136350), (10, 2195445), (14, 1568175), (15, 1463630), (21, 1045450), (25, 878178), (29, 757050), (30, 731815), (35, 627270), (42, 522725), (49, 448050), (50, 439089), (58, 378525), (70, 313635), (75, 292726), (87, 252350), (98, 224025), (103, 213150), (105, 209090), (145, 151410), (147, 149350), (150, 146363), (174, 126175), (175, 125454), (203, 108150), (206, 106575), (210, 104545), (245, 89610), (290, 75705), (294, 74675), (309, 71050), (350, 62727), (406, 54075), (435, 50470), (490, 44805), (515, 42630), (525, 41818), (609, 36050), (618, 35525), (721, 30450), (725, 30282), (735, 29870), (870, 25235), (1015, 21630), (1030, 21315), (1050, 20909), (1218, 18025), (1225, 17922), (1421, 15450), (1442, 15225), (1450, 15141), (1470, 14935), (1545, 14210), (2030, 10815), (2163, 10150), (2175, 10094), (2450, 8961), (2575, 8526), (2842, 7725), (2987, 7350), (3045, 7210), (3090, 7105), (3605, 6090), (3675, 5974), (4263, 5150), (4326, 5075), (4350, 5047)]