218399825

素因数分解:

$5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{499}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 322896000

約数和(自身を除く): 104496175

約数列:

[1, 5, 7, 25, 35, 41, 61, 175, 205, 287, 305, 427, 499, 1025, 1435, 1525, 2135, 2495, 2501, 3493, 7175, 10675, 12475, 12505, 17465, 17507, 20459, 30439, 62525, 87325, 87535, 102295, 143213, 152195, 213073, 437675, 511475, 716065, 760975, 1065365, 1247999, 3580325, 5326825, 6239995, 8735993, 31199975, 43679965, 218399825]

約数ペア:

[(1, 218399825), (5, 43679965), (7, 31199975), (25, 8735993), (35, 6239995), (41, 5326825), (61, 3580325), (175, 1247999), (205, 1065365), (287, 760975), (305, 716065), (427, 511475), (499, 437675), (1025, 213073), (1435, 152195), (1525, 143213), (2135, 102295), (2495, 87535), (2501, 87325), (3493, 62525), (7175, 30439), (10675, 20459), (12475, 17507), (12505, 17465)]