19690360

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5531}}^1$

素因数の和:5631

約数の個数: 32

約数和(自身を含む): 44809200

約数和(自身を除く): 25118840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 5531, 11062, 22124, 27655, 44248, 55310, 110620, 221240, 492259, 984518, 1969036, 2461295, 3938072, 4922590, 9845180, 19690360]

約数ペア:

[(1, 19690360), (2, 9845180), (4, 4922590), (5, 3938072), (8, 2461295), (10, 1969036), (20, 984518), (40, 492259), (89, 221240), (178, 110620), (356, 55310), (445, 44248), (712, 27655), (890, 22124), (1780, 11062), (3560, 5531)]