646425

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1$

素因数の和:59

約数の個数: 54

約数和(自身を含む): 1327482

約数和(自身を除く): 681057

約数列:

[1, 3, 5, 9, 13, 15, 17, 25, 39, 45, 51, 65, 75, 85, 117, 153, 169, 195, 221, 225, 255, 325, 425, 507, 585, 663, 765, 845, 975, 1105, 1275, 1521, 1989, 2535, 2873, 2925, 3315, 3825, 4225, 5525, 7605, 8619, 9945, 12675, 14365, 16575, 25857, 38025, 43095, 49725, 71825, 129285, 215475, 646425]

約数ペア:

[(1, 646425), (3, 215475), (5, 129285), (9, 71825), (13, 49725), (15, 43095), (17, 38025), (25, 25857), (39, 16575), (45, 14365), (51, 12675), (65, 9945), (75, 8619), (85, 7605), (117, 5525), (153, 4225), (169, 3825), (195, 3315), (221, 2925), (225, 2873), (255, 2535), (325, 1989), (425, 1521), (507, 1275), (585, 1105), (663, 975), (765, 845)]