81003975

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{331}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 145240704

約数和(自身を除く): 64236729

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 251, 325, 331, 753, 975, 993, 1255, 1655, 3263, 3765, 4303, 4965, 6275, 8275, 9789, 12909, 16315, 18825, 21515, 24825, 48945, 64545, 81575, 83081, 107575, 244725, 249243, 322725, 415405, 1080053, 1246215, 2077025, 3240159, 5400265, 6231075, 16200795, 27001325, 81003975]

約数ペア:

[(1, 81003975), (3, 27001325), (5, 16200795), (13, 6231075), (15, 5400265), (25, 3240159), (39, 2077025), (65, 1246215), (75, 1080053), (195, 415405), (251, 322725), (325, 249243), (331, 244725), (753, 107575), (975, 83081), (993, 81575), (1255, 64545), (1655, 48945), (3263, 24825), (3765, 21515), (4303, 18825), (4965, 16315), (6275, 12909), (8275, 9789)]