209819820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{499571}}^1$

素因数の和:499590

約数の個数: 48

約数和(自身を含む): 671424768

約数和(自身を除く): 461604948

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 499571, 999142, 1498713, 1998284, 2497855, 2997426, 3496997, 4995710, 5994852, 6993994, 7493565, 9991420, 10490991, 13987988, 14987130, 17484985, 20981982, 29974260, 34969970, 41963964, 52454955, 69939940, 104909910, 209819820]

約数ペア:

[(1, 209819820), (2, 104909910), (3, 69939940), (4, 52454955), (5, 41963964), (6, 34969970), (7, 29974260), (10, 20981982), (12, 17484985), (14, 14987130), (15, 13987988), (20, 10490991), (21, 9991420), (28, 7493565), (30, 6993994), (35, 5994852), (42, 4995710), (60, 3496997), (70, 2997426), (84, 2497855), (105, 1998284), (140, 1498713), (210, 999142), (420, 499571)]