285417220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{59}}^1\times {\mathrm{1999}}^1$

素因数の和:2089

約数の個数: 72

約数和(自身を含む): 670320000

約数和(自身を除く): 384902780

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 121, 220, 236, 242, 295, 484, 590, 605, 649, 1180, 1210, 1298, 1999, 2420, 2596, 3245, 3998, 6490, 7139, 7996, 9995, 12980, 14278, 19990, 21989, 28556, 35695, 39980, 43978, 71390, 87956, 109945, 117941, 142780, 219890, 235882, 241879, 439780, 471764, 483758, 589705, 967516, 1179410, 1209395, 1297351, 2358820, 2418790, 2594702, 4837580, 5189404, 6486755, 12973510, 14270861, 25947020, 28541722, 57083444, 71354305, 142708610, 285417220]

約数ペア:

[(1, 285417220), (2, 142708610), (4, 71354305), (5, 57083444), (10, 28541722), (11, 25947020), (20, 14270861), (22, 12973510), (44, 6486755), (55, 5189404), (59, 4837580), (110, 2594702), (118, 2418790), (121, 2358820), (220, 1297351), (236, 1209395), (242, 1179410), (295, 967516), (484, 589705), (590, 483758), (605, 471764), (649, 439780), (1180, 241879), (1210, 235882), (1298, 219890), (1999, 142780), (2420, 117941), (2596, 109945), (3245, 87956), (3998, 71390), (6490, 43978), (7139, 39980), (7996, 35695), (9995, 28556), (12980, 21989), (14278, 19990)]