20779875

素因数分解:

$3^3\times 5^3\times {\mathrm{47}}^1\times {\mathrm{131}}^1$

素因数の和:202

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 18756765

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 47, 75, 125, 131, 135, 141, 225, 235, 375, 393, 423, 655, 675, 705, 1125, 1175, 1179, 1269, 1965, 2115, 3275, 3375, 3525, 3537, 5875, 5895, 6157, 6345, 9825, 10575, 16375, 17625, 17685, 18471, 29475, 30785, 31725, 49125, 52875, 55413, 88425, 92355, 147375, 153925, 158625, 166239, 277065, 442125, 461775, 769625, 831195, 1385325, 2308875, 4155975, 6926625, 20779875]

約数ペア:

[(1, 20779875), (3, 6926625), (5, 4155975), (9, 2308875), (15, 1385325), (25, 831195), (27, 769625), (45, 461775), (47, 442125), (75, 277065), (125, 166239), (131, 158625), (135, 153925), (141, 147375), (225, 92355), (235, 88425), (375, 55413), (393, 52875), (423, 49125), (655, 31725), (675, 30785), (705, 29475), (1125, 18471), (1175, 17685), (1179, 17625), (1269, 16375), (1965, 10575), (2115, 9825), (3275, 6345), (3375, 6157), (3525, 5895), (3537, 5875)]