128925500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^2\times {\mathrm{2131}}^1$

素因数の和:2172

約数の個数: 72

約数和(自身を含む): 309643152

約数和(自身を除く): 180717652

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 121, 125, 220, 242, 250, 275, 484, 500, 550, 605, 1100, 1210, 1375, 2131, 2420, 2750, 3025, 4262, 5500, 6050, 8524, 10655, 12100, 15125, 21310, 23441, 30250, 42620, 46882, 53275, 60500, 93764, 106550, 117205, 213100, 234410, 257851, 266375, 468820, 515702, 532750, 586025, 1031404, 1065500, 1172050, 1289255, 2344100, 2578510, 2930125, 5157020, 5860250, 6446275, 11720500, 12892550, 25785100, 32231375, 64462750, 128925500]

約数ペア:

[(1, 128925500), (2, 64462750), (4, 32231375), (5, 25785100), (10, 12892550), (11, 11720500), (20, 6446275), (22, 5860250), (25, 5157020), (44, 2930125), (50, 2578510), (55, 2344100), (100, 1289255), (110, 1172050), (121, 1065500), (125, 1031404), (220, 586025), (242, 532750), (250, 515702), (275, 468820), (484, 266375), (500, 257851), (550, 234410), (605, 213100), (1100, 117205), (1210, 106550), (1375, 93764), (2131, 60500), (2420, 53275), (2750, 46882), (3025, 42620), (4262, 30250), (5500, 23441), (6050, 21310), (8524, 15125), (10655, 12100)]