21647175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1381}}^1$

素因数の和:1424

約数の個数: 48

約数和(自身を含む): 41128320

約数和(自身を除く): 19481145

約数列:

[1, 3, 5, 11, 15, 19, 25, 33, 55, 57, 75, 95, 165, 209, 275, 285, 475, 627, 825, 1045, 1381, 1425, 3135, 4143, 5225, 6905, 15191, 15675, 20715, 26239, 34525, 45573, 75955, 78717, 103575, 131195, 227865, 288629, 379775, 393585, 655975, 865887, 1139325, 1443145, 1967925, 4329435, 7215725, 21647175]

約数ペア:

[(1, 21647175), (3, 7215725), (5, 4329435), (11, 1967925), (15, 1443145), (19, 1139325), (25, 865887), (33, 655975), (55, 393585), (57, 379775), (75, 288629), (95, 227865), (165, 131195), (209, 103575), (275, 78717), (285, 75955), (475, 45573), (627, 34525), (825, 26239), (1045, 20715), (1381, 15675), (1425, 15191), (3135, 6905), (4143, 5225)]