28618520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{179}}^1\times {\mathrm{571}}^1$

素因数の和:768

約数の個数: 64

約数和(自身を含む): 74131200

約数和(自身を除く): 45512680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 179, 280, 358, 571, 716, 895, 1142, 1253, 1432, 1790, 2284, 2506, 2855, 3580, 3997, 4568, 5012, 5710, 6265, 7160, 7994, 10024, 11420, 12530, 15988, 19985, 22840, 25060, 31976, 39970, 50120, 79940, 102209, 159880, 204418, 408836, 511045, 715463, 817672, 1022090, 1430926, 2044180, 2861852, 3577315, 4088360, 5723704, 7154630, 14309260, 28618520]

約数ペア:

[(1, 28618520), (2, 14309260), (4, 7154630), (5, 5723704), (7, 4088360), (8, 3577315), (10, 2861852), (14, 2044180), (20, 1430926), (28, 1022090), (35, 817672), (40, 715463), (56, 511045), (70, 408836), (140, 204418), (179, 159880), (280, 102209), (358, 79940), (571, 50120), (716, 39970), (895, 31976), (1142, 25060), (1253, 22840), (1432, 19985), (1790, 15988), (2284, 12530), (2506, 11420), (2855, 10024), (3580, 7994), (3997, 7160), (4568, 6265), (5012, 5710)]