28405880

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{13399}}^1$

素因数の和:13463

約数の個数: 32

約数和(自身を含む): 65124000

約数和(自身を除く): 36718120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 13399, 26798, 53596, 66995, 107192, 133990, 267980, 535960, 710147, 1420294, 2840588, 3550735, 5681176, 7101470, 14202940, 28405880]

約数ペア:

[(1, 28405880), (2, 14202940), (4, 7101470), (5, 5681176), (8, 3550735), (10, 2840588), (20, 1420294), (40, 710147), (53, 535960), (106, 267980), (212, 133990), (265, 107192), (424, 66995), (530, 53596), (1060, 26798), (2120, 13399)]