2899540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 7056000

約数和(自身を除く): 4156460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 149, 278, 298, 556, 596, 695, 745, 973, 1043, 1390, 1490, 1946, 2086, 2780, 2980, 3892, 4172, 4865, 5215, 9730, 10430, 19460, 20711, 20860, 41422, 82844, 103555, 144977, 207110, 289954, 414220, 579908, 724885, 1449770, 2899540]

約数ペア:

[(1, 2899540), (2, 1449770), (4, 724885), (5, 579908), (7, 414220), (10, 289954), (14, 207110), (20, 144977), (28, 103555), (35, 82844), (70, 41422), (139, 20860), (140, 20711), (149, 19460), (278, 10430), (298, 9730), (556, 5215), (596, 4865), (695, 4172), (745, 3892), (973, 2980), (1043, 2780), (1390, 2086), (1490, 1946)]