18719025

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{263}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 33914496

約数和(自身を除く): 15195471

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 73, 75, 195, 219, 263, 325, 365, 789, 949, 975, 1095, 1315, 1825, 2847, 3419, 3945, 4745, 5475, 6575, 10257, 14235, 17095, 19199, 19725, 23725, 51285, 57597, 71175, 85475, 95995, 249587, 256425, 287985, 479975, 748761, 1247935, 1439925, 3743805, 6239675, 18719025]

約数ペア:

[(1, 18719025), (3, 6239675), (5, 3743805), (13, 1439925), (15, 1247935), (25, 748761), (39, 479975), (65, 287985), (73, 256425), (75, 249587), (195, 95995), (219, 85475), (263, 71175), (325, 57597), (365, 51285), (789, 23725), (949, 19725), (975, 19199), (1095, 17095), (1315, 14235), (1825, 10257), (2847, 6575), (3419, 5475), (3945, 4745)]