398455420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{229}}^1\times {\mathrm{719}}^1$

素因数の和:979

約数の個数: 72

約数和(自身を含む): 925041600

約数和(自身を除く): 526586180

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 229, 242, 458, 484, 605, 719, 916, 1145, 1210, 1438, 2290, 2420, 2519, 2876, 3595, 4580, 5038, 7190, 7909, 10076, 12595, 14380, 15818, 25190, 27709, 31636, 39545, 50380, 55418, 79090, 86999, 110836, 138545, 158180, 164651, 173998, 277090, 329302, 347996, 434995, 554180, 658604, 823255, 869990, 1646510, 1739980, 1811161, 3293020, 3622322, 7244644, 9055805, 18111610, 19922771, 36223220, 39845542, 79691084, 99613855, 199227710, 398455420]

約数ペア:

[(1, 398455420), (2, 199227710), (4, 99613855), (5, 79691084), (10, 39845542), (11, 36223220), (20, 19922771), (22, 18111610), (44, 9055805), (55, 7244644), (110, 3622322), (121, 3293020), (220, 1811161), (229, 1739980), (242, 1646510), (458, 869990), (484, 823255), (605, 658604), (719, 554180), (916, 434995), (1145, 347996), (1210, 329302), (1438, 277090), (2290, 173998), (2420, 164651), (2519, 158180), (2876, 138545), (3595, 110836), (4580, 86999), (5038, 79090), (7190, 55418), (7909, 50380), (10076, 39545), (12595, 31636), (14380, 27709), (15818, 25190)]