18528705

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1667}}^1$

素因数の和:1710

約数の個数: 48

約数和(自身を含む): 36429120

約数和(自身を除く): 17900415

約数列:

[1, 3, 5, 9, 13, 15, 19, 39, 45, 57, 65, 95, 117, 171, 195, 247, 285, 585, 741, 855, 1235, 1667, 2223, 3705, 5001, 8335, 11115, 15003, 21671, 25005, 31673, 65013, 75015, 95019, 108355, 158365, 195039, 285057, 325065, 411749, 475095, 975195, 1235247, 1425285, 2058745, 3705741, 6176235, 18528705]

約数ペア:

[(1, 18528705), (3, 6176235), (5, 3705741), (9, 2058745), (13, 1425285), (15, 1235247), (19, 975195), (39, 475095), (45, 411749), (57, 325065), (65, 285057), (95, 195039), (117, 158365), (171, 108355), (195, 95019), (247, 75015), (285, 65013), (585, 31673), (741, 25005), (855, 21671), (1235, 15003), (1667, 11115), (2223, 8335), (3705, 5001)]