24959980

素因数分解:

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

素因数の和:610

約数の個数: 48

約数和(自身を含む): 54684000

約数和(自身を除く): 29724020

約数列:

[1, 2, 4, 5, 10, 20, 41, 61, 82, 122, 164, 205, 244, 305, 410, 499, 610, 820, 998, 1220, 1996, 2495, 2501, 4990, 5002, 9980, 10004, 12505, 20459, 25010, 30439, 40918, 50020, 60878, 81836, 102295, 121756, 152195, 204590, 304390, 409180, 608780, 1247999, 2495998, 4991996, 6239995, 12479990, 24959980]

約数ペア:

[(1, 24959980), (2, 12479990), (4, 6239995), (5, 4991996), (10, 2495998), (20, 1247999), (41, 608780), (61, 409180), (82, 304390), (122, 204590), (164, 152195), (205, 121756), (244, 102295), (305, 81836), (410, 60878), (499, 50020), (610, 40918), (820, 30439), (998, 25010), (1220, 20459), (1996, 12505), (2495, 10004), (2501, 9980), (4990, 5002)]