20398210

素因数分解:

$2^1\times 5^1\times 7^3\times {\mathrm{19}}^1\times {\mathrm{313}}^1$

素因数の和:360

約数の個数: 64

約数和(自身を含む): 45216000

約数和(自身を除く): 24817790

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 313, 343, 490, 626, 665, 686, 931, 1330, 1565, 1715, 1862, 2191, 3130, 3430, 4382, 4655, 5947, 6517, 9310, 10955, 11894, 13034, 15337, 21910, 29735, 30674, 32585, 41629, 59470, 65170, 76685, 83258, 107359, 153370, 208145, 214718, 291403, 416290, 536795, 582806, 1073590, 1457015, 2039821, 2914030, 4079642, 10199105, 20398210]

約数ペア:

[(1, 20398210), (2, 10199105), (5, 4079642), (7, 2914030), (10, 2039821), (14, 1457015), (19, 1073590), (35, 582806), (38, 536795), (49, 416290), (70, 291403), (95, 214718), (98, 208145), (133, 153370), (190, 107359), (245, 83258), (266, 76685), (313, 65170), (343, 59470), (490, 41629), (626, 32585), (665, 30674), (686, 29735), (931, 21910), (1330, 15337), (1565, 13034), (1715, 11894), (1862, 10955), (2191, 9310), (3130, 6517), (3430, 5947), (4382, 4655)]