81485325

素因数分解:

$3^3\times 5^2\times {\mathrm{61}}^1\times {\mathrm{1979}}^1$

素因数の和:2059

約数の個数: 48

約数和(自身を含む): 152222400

約数和(自身を除く): 70737075

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 61, 75, 135, 183, 225, 305, 549, 675, 915, 1525, 1647, 1979, 2745, 4575, 5937, 8235, 9895, 13725, 17811, 29685, 41175, 49475, 53433, 89055, 120719, 148425, 267165, 362157, 445275, 603595, 1086471, 1335825, 1810785, 3017975, 3259413, 5432355, 9053925, 16297065, 27161775, 81485325]

約数ペア:

[(1, 81485325), (3, 27161775), (5, 16297065), (9, 9053925), (15, 5432355), (25, 3259413), (27, 3017975), (45, 1810785), (61, 1335825), (75, 1086471), (135, 603595), (183, 445275), (225, 362157), (305, 267165), (549, 148425), (675, 120719), (915, 89055), (1525, 53433), (1647, 49475), (1979, 41175), (2745, 29685), (4575, 17811), (5937, 13725), (8235, 9895)]