2813860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 6854400

約数和(自身を除く): 4040540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 101, 140, 199, 202, 398, 404, 505, 707, 796, 995, 1010, 1393, 1414, 1990, 2020, 2786, 2828, 3535, 3980, 5572, 6965, 7070, 13930, 14140, 20099, 27860, 40198, 80396, 100495, 140693, 200990, 281386, 401980, 562772, 703465, 1406930, 2813860]

約数ペア:

[(1, 2813860), (2, 1406930), (4, 703465), (5, 562772), (7, 401980), (10, 281386), (14, 200990), (20, 140693), (28, 100495), (35, 80396), (70, 40198), (101, 27860), (140, 20099), (199, 14140), (202, 13930), (398, 7070), (404, 6965), (505, 5572), (707, 3980), (796, 3535), (995, 2828), (1010, 2786), (1393, 2020), (1414, 1990)]