31981150

素因数分解:

$2^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{439}}^1$

素因数の和:529

約数の個数: 48

約数和(自身を含む): 62853120

約数和(自身を除く): 30871970

約数列:

[1, 2, 5, 10, 25, 31, 47, 50, 62, 94, 155, 235, 310, 439, 470, 775, 878, 1175, 1457, 1550, 2195, 2350, 2914, 4390, 7285, 10975, 13609, 14570, 20633, 21950, 27218, 36425, 41266, 68045, 72850, 103165, 136090, 206330, 340225, 515825, 639623, 680450, 1031650, 1279246, 3198115, 6396230, 15990575, 31981150]

約数ペア:

[(1, 31981150), (2, 15990575), (5, 6396230), (10, 3198115), (25, 1279246), (31, 1031650), (47, 680450), (50, 639623), (62, 515825), (94, 340225), (155, 206330), (235, 136090), (310, 103165), (439, 72850), (470, 68045), (775, 41266), (878, 36425), (1175, 27218), (1457, 21950), (1550, 20633), (2195, 14570), (2350, 13609), (2914, 10975), (4390, 7285)]