180820100

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{313}}^1$

素因数の和:489

約数の個数: 72

約数和(自身を含む): 404739720

約数和(自身を除く): 223919620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 109, 212, 218, 265, 313, 436, 530, 545, 626, 1060, 1090, 1252, 1325, 1565, 2180, 2650, 2725, 3130, 5300, 5450, 5777, 6260, 7825, 10900, 11554, 15650, 16589, 23108, 28885, 31300, 33178, 34117, 57770, 66356, 68234, 82945, 115540, 136468, 144425, 165890, 170585, 288850, 331780, 341170, 414725, 577700, 682340, 829450, 852925, 1658900, 1705850, 1808201, 3411700, 3616402, 7232804, 9041005, 18082010, 36164020, 45205025, 90410050, 180820100]

約数ペア:

[(1, 180820100), (2, 90410050), (4, 45205025), (5, 36164020), (10, 18082010), (20, 9041005), (25, 7232804), (50, 3616402), (53, 3411700), (100, 1808201), (106, 1705850), (109, 1658900), (212, 852925), (218, 829450), (265, 682340), (313, 577700), (436, 414725), (530, 341170), (545, 331780), (626, 288850), (1060, 170585), (1090, 165890), (1252, 144425), (1325, 136468), (1565, 115540), (2180, 82945), (2650, 68234), (2725, 66356), (3130, 57770), (5300, 34117), (5450, 33178), (5777, 31300), (6260, 28885), (7825, 23108), (10900, 16589), (11554, 15650)]